阅读说明：本技术 一种基于尾矿利用的石油压裂支撑剂制备工艺 (Preparation process of petroleum fracturing propping agent based on tailing utilization ) 是由 谢秋波 谢武龙 郑鹏 谢英民 于 2021-07-05 设计创作，主要内容包括：本发明属于石油压裂支撑剂制备领域,尤其是一种基于尾矿利用的石油压裂支撑剂制备工艺,针对现有的不便于对球磨机的研磨效率进行把控问题,现提出如下方案,其包括以下步骤：S1、对板材尾矿、高铁矿、铝矾土进行分别计量,将计量后的板材尾矿、高铁矿、铝矾土分别放入球磨机内；S2、球磨机对板材尾矿、高铁矿、铝矾土进行研磨,合格细料从出料口排出；S3、在球磨机启动的同时,计时器和监测器开始工作,计时器对研磨的时间进行监测,监测器对出料情况进行监测；S4、将监测器的监测画面传输至控制中心,与控制中心预设的画面进行对比,本发明可以对研磨效率进行把控,可以提高水管的检修效率。(The invention belongs to the field of preparation of petroleum fracturing propping agents, in particular to a preparation process of a petroleum fracturing propping agent based on tailing utilization, aiming at the problem that the grinding efficiency of a ball mill is inconvenient to control, the following scheme is proposed, and the preparation process comprises the following steps: s1, respectively measuring the plate tailings, the high iron ore and the bauxite, and respectively putting the measured plate tailings, the high iron ore and the bauxite into a ball mill; s2, grinding the plate tailings, the high-iron ore and the bauxite by using a ball mill, and discharging qualified fine materials from a discharge hole; s3, when the ball mill is started, the timer and the monitor start to work, the timer monitors the grinding time, and the monitor monitors the discharging condition; s4, transmitting the monitoring picture of the monitor to a control center, and comparing the monitoring picture with the picture preset by the control center.)

1. A preparation process of a petroleum fracturing propping agent based on tailing utilization is characterized by comprising the following steps:

s1, respectively measuring the plate tailings, the high iron ore and the bauxite, and respectively putting the measured plate tailings, the high iron ore and the bauxite into a ball mill;

s2, grinding the plate tailings, the high-iron ore and the bauxite by using a ball mill, and discharging qualified fine materials from a discharge hole;

s3, when the ball mill is started, the timer and the monitor start to work, the timer monitors the grinding time, and the monitor monitors the discharging condition;

s4, transmitting the monitoring picture of the monitor to a control center, comparing the monitoring picture with a picture preset by the control center, and when the comparison is consistent, indicating that the grinding is finished and the discharging port does not discharge any more;

s5, after grinding, closing the ball mill and the timer by the controller, collecting data displayed by the timer at the moment, and collecting the type and the amount of ground mineral aggregates;

s6, calculating the grinding efficiency of the mineral aggregate according to the type, the amount and the time of the collected mineral aggregate, comparing the grinding efficiency data with efficiency data preset in a database, and controlling the grinding efficiency;

s7, metering the ground mineral aggregate powder, and mixing the metered powder;

s8, adding water into the mixed raw materials, and fully polishing to obtain a ceramsite raw material;

and S9, calcining the ceramsite raw material in a rotary kiln, and sintering at high temperature and naturally cooling to obtain the petroleum fracturing propping agent.

2. The process for preparing petroleum fracturing propping agent based on tailing utilization of claim 1, wherein in S8, water is pumped by a water pump and is conveyed by a water pipe, the water flow is monitored by a flow sensor when the water is conveyed, and the conveying is stopped when a preset amount is reached.

3. The process for preparing the oil fracturing propping agent based on tailing utilization of claim 2, wherein the water pipe is divided into 5-10 sections, pressure sensors are arranged in the 5-10 sections, the pressure sensors are used for collecting pressure data of different sections of the water pipe, the collected data are transmitted to a control center, and when the transmitted data have differences, the sections corresponding to the difference data are found out for maintenance.

4. The process for preparing the petroleum fracturing propping agent based on tailing utilization of claim 1, wherein in S7, the plate tailings and the high-iron ore powder are firstly put into a stirring device and stirred for 30-40min at the stirring speed of 350r/min, then the bauxite powder is put into the stirring device and continuously stirred for 30-40min at the stirring speed of 300-350r/min, and the mixing of the raw materials is completed.

5. The process for preparing a petroleum fracturing propping agent based on tailing utilization of claim 1, wherein in S8, 5-15% by weight of water is added into the mixed raw materials, and after sufficient polishing, ceramsite raw material with the particle size of 20-40/30-50/40-70 meshes is obtained.

6. The process for preparing a petroleum fracturing propping agent based on tailing utilization as claimed in claim 1, wherein in S9, ceramsite raw material is placed into a rotary kiln for calcination, the temperature in the rotary kiln is monitored by a temperature monitor, the rotary kiln is preheated for 20-40min at the temperature of 400 ℃ and the temperature is kept constant at 1100 ℃ and 1200 ℃ and then the rotary kiln is fired for 180min and the rotation speed is 0.25-0.67 r/min.

7. The process for preparing the oil fracturing propping agent based on tailing utilization of claim 1, wherein in S2, qualified fine materials are discharged from a discharge port, the fine materials are collected through a collection box, a weighing device is arranged at the bottom of the collection box, the weighing device measures the weight of the collection box, the measurement data is transmitted to a control center and is compared with data preset by the control center, and when the preset data is reached, an alarm sounds to remind the collection box to be replaced.

8. The process of claim 1, wherein in the step S7, the ground mineral aggregate powder is measured, the fineness of the powder is 200-500 meshes, and the measured powder is mixed.

9. The process for preparing the petroleum fracturing propping agent based on tailing utilization of claim 1, wherein in S3, the ball mill is operated for 12-24 hours before being ground, then the materials and 1/3 amount of steel balls are added for trial operation for 12-24 hours, and the steel balls added until 2/3 amount are added for operation for 24-48 hours.

10. The process of claim 1, wherein in the step S8, water is added to the mixed raw materials, and the raw materials are stirred by a stirring shaft, wherein the rotation speed of the stirring shaft is 200-300 r/min.

Technical Field

The invention relates to the technical field of preparation of petroleum fracturing propping agents, in particular to a preparation process of a petroleum fracturing propping agent based on tailing utilization.

Background

The petroleum proppant is also called petroleum fracturing proppant. When the petroleum and natural gas deep well is exploited, after the high-closure-pressure low-permeability deposit is subjected to fracturing treatment, the petroleum-containing rock stratum is cracked, the petroleum and gas are collected from a channel formed by the cracks, at the moment, the fluid is required to be injected into the rock base layer so as to exceed the pressure of the fracture strength of the stratum, the rock stratum around the shaft is cracked, a channel with high laminar flow capacity is formed, and in order to keep the cracks formed after fracturing open, the petroleum and gas products can smoothly pass through the channel.

Through searching, publication No.: the patent document CN109439312A discloses a petroleum fracturing propping agent based on tailing utilization, a production process and application, wherein the petroleum fracturing propping agent comprises 15-50% of plate tailings, 10-35% of high-iron ore and 10-50% of bauxite by weight percentage; the invention also provides a preparation method of the petroleum fracturing propping agent based on tailing utilization, which comprises the following steps: step 1): preparing materials; step 2): grinding; step 3): granulating; step 4): sintering to obtain the petroleum fracturing propping agent; the invention also provides an application, which comprises the petroleum fracturing propping agent, and the petroleum fracturing propping agent is used for the hydraulic fracturing process of the oil field. The petroleum fracturing propping agent provided by the invention is shown by index total analysis data to completely meet the requirements of a propping agent performance test method for SY/T5108-2014 water conservancy fracturing and gravel filling operation.

However, the process is inconvenient for controlling the grinding efficiency of the ball mill, so a preparation process of the petroleum fracturing propping agent based on tailing utilization is provided for solving the problems.

Disclosure of Invention

The invention aims to solve the defect that the grinding efficiency of a ball mill is inconvenient to control in the prior art, and provides a preparation process of a petroleum fracturing propping agent based on tailing utilization.

In order to achieve the purpose, the invention adopts the following technical scheme:

a preparation process of a petroleum fracturing propping agent based on tailing utilization comprises the following steps:

s1, respectively measuring the plate tailings, the high iron ore and the bauxite, and respectively putting the measured plate tailings, the high iron ore and the bauxite into a ball mill;

s2, grinding the plate tailings, the high-iron ore and the bauxite by using a ball mill, and discharging qualified fine materials from a discharge hole;

s3, when the ball mill is started, the timer and the monitor start to work, the timer monitors the grinding time, and the monitor monitors the discharging condition;

s4, transmitting the monitoring picture of the monitor to a control center, comparing the monitoring picture with a picture preset by the control center, and when the comparison is consistent, indicating that the grinding is finished and the discharging port does not discharge any more;

s5, after grinding, closing the ball mill and the timer by the controller, collecting data displayed by the timer at the moment, and collecting the type and the amount of ground mineral aggregates;

s6, calculating the grinding efficiency of the mineral aggregate according to the type, the amount and the time of the collected mineral aggregate, comparing the grinding efficiency data with efficiency data preset in a database, and controlling the grinding efficiency;

s7, metering the ground mineral aggregate powder, and mixing the metered powder;

s8, adding water into the mixed raw materials, and fully polishing to obtain a ceramsite raw material;

and S9, calcining the ceramsite raw material in a rotary kiln, and sintering at high temperature and naturally cooling to obtain the petroleum fracturing propping agent.

Preferably, in S8, the water pump pumps the water, the water is delivered through the water pipe, the flow rate of the water is monitored by the flow sensor during delivery, and the delivery is stopped when a predetermined amount of the water is reached.

Preferably, the water pipe is divided into 5-10 sections, pressure sensors are arranged in the 5-10 sections, pressure data of different sections of the water pipe are collected through the pressure sensors, the collected data are transmitted to the control center, and when the transmitted data have differences, the sections corresponding to the difference data are found out for overhauling.

Preferably, in the step S7, the plate tailings and the high-iron ore powder are firstly put into a stirring device and stirred for 30-40min at the stirring speed of 350r/min, then the bauxite powder is added into the stirring device and stirred for 30-40min continuously at the stirring speed of 350r/min, and the mixing of the raw materials is completed.

Preferably, in the S8, 5-15% by mass of water is added into the mixed raw materials, and after sufficient polishing, the ceramsite raw material with the particle size of 20-40/30-50/40-70 meshes is obtained.

Preferably, in the step S9, the ceramsite raw material is placed into a rotary kiln for calcination, the temperature in the rotary kiln is monitored by a temperature monitor, the ceramsite raw material is preheated for 20-40min at the temperature of 400 ℃ of 300-.

Preferably, in S2, qualified fine material is discharged from the discharge gate, collects the fine material through the collecting box, and the bottom of collecting is equipped with the weigher, and the weigher measures the weight of collecting box, and measurement data transmits to control center, compares with the data that control center predetermines, and when reaching preset data, the alarm sounds, reminds to change the collecting box.

Preferably, in the step S7, the ground mineral aggregate powder is measured, the fineness of the powder is 200-500 meshes, and the measured powder is mixed.

Preferably, in the S3, the ball mill is operated for 12-24 hours before being ground, then the materials and 1/3 amount of steel balls are added for trial operation for 12-24 hours, and the amount of the steel balls added till 2/3 amount of steel balls is operated for 24-48 hours.

Preferably, in the step S8, water is added to the mixed raw materials, and the raw materials are stirred by a stirring shaft, wherein the rotation speed of the stirring shaft is 200-300 r/min.

Compared with the prior art, the invention has the beneficial effects that:

according to the scheme, the grinding efficiency of the mineral aggregate is calculated through the collected type, amount and time of the mineral aggregate, the grinding efficiency data is compared with efficiency data preset in a database, and the grinding efficiency is controlled;

according to the scheme, water is extracted through the water pump and conveyed through the water pipe, when the water is conveyed, the water flow is monitored through the flow sensor, and when a preset amount is reached, the conveying is stopped;

according to the scheme, the water pipe is divided into 5-10 sections, the pressure sensors are arranged in the 5-10 sections, pressure data of different sections of the water pipe are collected through the pressure sensors, the collected data are transmitted to the control center, and when the transmitted data are different, the sections corresponding to the different data are found out for maintenance, so that the time is saved;

the invention can control the grinding efficiency and improve the maintenance efficiency of the water pipe.

Drawings

Fig. 1 is a schematic structural diagram of a preparation process of a petroleum fracturing propping agent based on tailing utilization, which is provided by the invention.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments.

Example one

Referring to fig. 1, a preparation process of a petroleum fracturing propping agent based on tailing utilization comprises the following steps:

s1, respectively measuring the plate tailings, the high iron ore and the bauxite, and respectively putting the measured plate tailings, the high iron ore and the bauxite into a ball mill;

s2, grinding the plate tailings, the high-iron ore and the bauxite by using a ball mill, and discharging qualified fine materials from a discharge hole;

s3, when the ball mill is started, the timer and the monitor start to work, the timer monitors the grinding time, and the monitor monitors the discharging condition;

s4, transmitting the monitoring picture of the monitor to a control center, comparing the monitoring picture with a picture preset by the control center, and when the comparison is consistent, indicating that the grinding is finished and the discharging port does not discharge any more;

s5, after grinding, closing the ball mill and the timer by the controller, collecting data displayed by the timer at the moment, and collecting the type and the amount of ground mineral aggregates;

s6, calculating the grinding efficiency of the mineral aggregate according to the type, the amount and the time of the collected mineral aggregate, comparing the grinding efficiency data with efficiency data preset in a database, and controlling the grinding efficiency;

s7, metering the ground mineral aggregate powder, wherein the fineness of the powder is 200 meshes, and mixing the metered powder;

s8, adding 5% by mass of water into the mixed raw materials, stirring the raw materials through a stirring shaft at the rotating speed of 200r/min, and fully polishing to obtain a ceramsite raw material with the particle size of 20 meshes;

and S9, calcining the ceramsite raw material in a rotary kiln, and sintering at high temperature and naturally cooling to obtain the petroleum fracturing propping agent.

In this embodiment, in S8, water is pumped by the water pump and delivered by the water pipe, and when water is delivered, the flow rate of water is monitored by the flow rate sensor, and when the water reaches a predetermined amount, the delivery is stopped.

In this embodiment, the water pipe divide into 5 districts, all sets up pressure sensor in 5 districts, gathers the pressure data of the different districts of water pipe through pressure sensor, transmits the data of gathering to control center, when there is the difference in the data of transmission, finds out the district section that difference data corresponds, overhauls.

In this embodiment, in S7, the plate tailings and the high iron ore powder are first put into a stirring device, stirred for 30min at a stirring speed of 300r/min, and then the bauxite powder is added into the stirring device, and stirred for 30min at a stirring speed of 300r/min, so as to complete the mixing of the raw materials.

In this embodiment, in S9, the ceramsite raw material is calcined in a rotary kiln, the temperature in the rotary kiln is monitored by a temperature monitor, the ceramsite raw material is preheated at 300 ℃ for 20min, and then the ceramsite raw material is sintered at a constant temperature of 1100 ℃ for 180min, wherein the rotation speed of the rotary kiln is 0.25 rpm.

In this embodiment, in S2, qualified fine material is discharged from the discharge gate, collects the fine material through the collecting box, and the bottom of collecting is equipped with the weigher, and the weigher is measured the weight of collecting box, and measurement data transmits to control center, contrasts with the data that control center predetermines, and when reaching preset data, the alarm sounds, reminds to change the collecting box.

In this example, in S3, the ball mill was operated empty for 12 hours before grinding, then the material and 1/3 number of steel balls were added and the operation was carried out for 12 hours, and the steel balls added to 2/3 number were operated for 24 hours.

Example two

Referring to fig. 1, a preparation process of a petroleum fracturing propping agent based on tailing utilization comprises the following steps:

s1, respectively measuring the plate tailings, the high iron ore and the bauxite, and respectively putting the measured plate tailings, the high iron ore and the bauxite into a ball mill;

s2, grinding the plate tailings, the high-iron ore and the bauxite by using a ball mill, and discharging qualified fine materials from a discharge hole;

s3, when the ball mill is started, the timer and the monitor start to work, the timer monitors the grinding time, and the monitor monitors the discharging condition;

s4, transmitting the monitoring picture of the monitor to a control center, comparing the monitoring picture with a picture preset by the control center, and when the comparison is consistent, indicating that the grinding is finished and the discharging port does not discharge any more;

s5, after grinding, closing the ball mill and the timer by the controller, collecting data displayed by the timer at the moment, and collecting the type and the amount of ground mineral aggregates;

s6, calculating the grinding efficiency of the mineral aggregate according to the type, the amount and the time of the collected mineral aggregate, comparing the grinding efficiency data with efficiency data preset in a database, and controlling the grinding efficiency;

s7, measuring the ground mineral aggregate powder, wherein the fineness of the powder is 350 meshes, and mixing the measured powder;

s8, adding 10% by mass of water into the mixed raw materials, stirring the raw materials through a stirring shaft at the rotating speed of 250r/min, and fully polishing to obtain a ceramsite raw material with the particle size of 50 meshes;

and S9, calcining the ceramsite raw material in a rotary kiln, and sintering at high temperature and naturally cooling to obtain the petroleum fracturing propping agent.

In this embodiment, in S8, water is pumped by the water pump and delivered by the water pipe, and when water is delivered, the flow rate of water is monitored by the flow rate sensor, and when the water reaches a predetermined amount, the delivery is stopped.

In this embodiment, the water pipe divide into 7 sections, all sets up pressure sensor in 7 sections, gathers the pressure data of the different sections of water pipe through pressure sensor, transmits the data of gathering to control center, when there is the difference in the data of transmission, finds out the section that difference data corresponds, overhauls.

In this embodiment, in S7, the plate tailings and the high iron ore powder are first put into a stirring device, stirred for 35min at a stirring speed of 320r/min, and then the bauxite powder is added into the stirring device, and stirred for another 35min at a stirring speed of 320r/min, so as to complete the mixing of the raw materials.

In this embodiment, in S9, the ceramsite raw material is calcined in a rotary kiln, the temperature in the rotary kiln is monitored by a temperature monitor, the ceramsite raw material is preheated at 350 ℃ for 30min, and then the ceramsite raw material is sintered at 1150 ℃ for 200min, wherein the rotation speed of the rotary kiln is 0.45 rpm.

In this embodiment, in S2, qualified fine material is discharged from the discharge gate, collects the fine material through the collecting box, and the bottom of collecting is equipped with the weigher, and the weigher is measured the weight of collecting box, and measurement data transmits to control center, contrasts with the data that control center predetermines, and when reaching preset data, the alarm sounds, reminds to change the collecting box.

In this example, in S3, the ball mill was operated empty for 18 hours before grinding, then the material and 1/3 number of steel balls were added and the operation was carried out for 20 hours, and the steel balls added to 2/3 number were operated for 35 hours.

EXAMPLE III

Referring to fig. 1, a preparation process of a petroleum fracturing propping agent based on tailing utilization comprises the following steps:

s1, respectively measuring the plate tailings, the high iron ore and the bauxite, and respectively putting the measured plate tailings, the high iron ore and the bauxite into a ball mill;

s2, grinding the plate tailings, the high-iron ore and the bauxite by using a ball mill, and discharging qualified fine materials from a discharge hole;

s3, when the ball mill is started, the timer and the monitor start to work, the timer monitors the grinding time, and the monitor monitors the discharging condition;

s4, transmitting the monitoring picture of the monitor to a control center, comparing the monitoring picture with a picture preset by the control center, and when the comparison is consistent, indicating that the grinding is finished and the discharging port does not discharge any more;

s5, after grinding, closing the ball mill and the timer by the controller, collecting data displayed by the timer at the moment, and collecting the type and the amount of ground mineral aggregates;

s6, calculating the grinding efficiency of the mineral aggregate according to the type, the amount and the time of the collected mineral aggregate, comparing the grinding efficiency data with efficiency data preset in a database, and controlling the grinding efficiency;

s7, metering the ground mineral aggregate powder, wherein the fineness of the powder is 400 meshes, and mixing the metered powder;

s8, adding 12% by mass of water into the mixed raw materials, stirring the raw materials through a stirring shaft at a rotating speed of 270r/min, and fully polishing to obtain a ceramsite raw material with a particle size of 60 meshes;

and S9, calcining the ceramsite raw material in a rotary kiln, and sintering at high temperature and naturally cooling to obtain the petroleum fracturing propping agent.

In this embodiment, in S8, water is pumped by the water pump and delivered by the water pipe, and when water is delivered, the flow rate of water is monitored by the flow rate sensor, and when the water reaches a predetermined amount, the delivery is stopped.

In this embodiment, the water pipe divide into 8 districts, all sets up pressure sensor in 8 districts, gathers the pressure data of the different districts of water pipe through pressure sensor, transmits the data of gathering to control center, when there is the difference in the data of transmission, finds out the district section that difference data corresponds, overhauls.

In this embodiment, in S7, the plate tailings and the high iron ore powder are first put into a stirring device, stirred for 38min at a stirring speed of 330r/min, and then the bauxite powder is added into the stirring device, and stirred for 35min at a stirring speed of 330r/min, so as to complete the mixing of the raw materials.

In this embodiment, in S9, the ceramsite raw material is calcined in a rotary kiln, the temperature in the rotary kiln is monitored by a temperature monitor, the ceramsite raw material is preheated at 380 ℃ for 38min, and then the ceramsite raw material is calcined at 1170 ℃ for 230min, wherein the rotation speed of the rotary kiln is 0.5 rpm.

In this embodiment, in S2, qualified fine material is discharged from the discharge gate, collects the fine material through the collecting box, and the bottom of collecting is equipped with the weigher, and the weigher is measured the weight of collecting box, and measurement data transmits to control center, contrasts with the data that control center predetermines, and when reaching preset data, the alarm sounds, reminds to change the collecting box.

In this example, in S3, the ball mill was idle for 22 hours before grinding, then the material and 1/3 number of steel balls were added and the operation was carried out for 22 hours, and the steel balls added to 2/3 number were run for 45 hours.

Example four

Referring to fig. 1, a preparation process of a petroleum fracturing propping agent based on tailing utilization comprises the following steps:

s1, respectively measuring the plate tailings, the high iron ore and the bauxite, and respectively putting the measured plate tailings, the high iron ore and the bauxite into a ball mill;

s2, grinding the plate tailings, the high-iron ore and the bauxite by using a ball mill, and discharging qualified fine materials from a discharge hole;

s3, when the ball mill is started, the timer and the monitor start to work, the timer monitors the grinding time, and the monitor monitors the discharging condition;

s4, transmitting the monitoring picture of the monitor to a control center, comparing the monitoring picture with a picture preset by the control center, and when the comparison is consistent, indicating that the grinding is finished and the discharging port does not discharge any more;

s5, after grinding, closing the ball mill and the timer by the controller, collecting data displayed by the timer at the moment, and collecting the type and the amount of ground mineral aggregates;

s6, calculating the grinding efficiency of the mineral aggregate according to the type, the amount and the time of the collected mineral aggregate, comparing the grinding efficiency data with efficiency data preset in a database, and controlling the grinding efficiency;

s7, metering the ground mineral aggregate powder, wherein the fineness of the powder is 500 meshes, and mixing the metered powder;

s8, adding 14% by mass of water into the mixed raw materials, stirring the raw materials through a stirring shaft at the rotating speed of 290r/min, and fully polishing to obtain a ceramsite raw material with the particle size of 70 meshes;

and S9, calcining the ceramsite raw material in a rotary kiln, and sintering at high temperature and naturally cooling to obtain the petroleum fracturing propping agent.

In this embodiment, in S8, water is pumped by the water pump and delivered by the water pipe, and when water is delivered, the flow rate of water is monitored by the flow rate sensor, and when the water reaches a predetermined amount, the delivery is stopped.

In this embodiment, the water pipe divide into 9 sections, all sets up pressure sensor in 9 sections, gathers the pressure data of the different sections of water pipe through pressure sensor, transmits the data of gathering to control center, when there is the difference in the data of transmission, finds out the section that difference data corresponds, overhauls.

In this embodiment, in S7, the plate tailings and the high iron ore powder are first put into a stirring device, stirred for 39min at a stirring speed of 345r/min, and then the bauxite powder is added into the stirring device, and stirred for 39min at a stirring speed of 345r/min, so as to complete the mixing of the raw materials.

In this embodiment, in S9, the ceramsite raw material is calcined in a rotary kiln, the temperature in the rotary kiln is monitored by a temperature monitor, the ceramsite raw material is preheated at 390 ℃ for 39min, and then the ceramsite raw material is calcined at 1180 ℃ for 235min at a constant temperature, wherein the rotation speed of the rotary kiln is 0.6 r/min.

In this embodiment, in S2, qualified fine material is discharged from the discharge gate, collects the fine material through the collecting box, and the bottom of collecting is equipped with the weigher, and the weigher is measured the weight of collecting box, and measurement data transmits to control center, contrasts with the data that control center predetermines, and when reaching preset data, the alarm sounds, reminds to change the collecting box.

In this example, in S3, the ball mill was operated in an idle state for 23 hours before grinding, then the material and 1/3 number of steel balls were added, and the operation was carried out for 23 hours until 2/3 number of steel balls were added.

EXAMPLE five

Referring to fig. 1, a preparation process of a petroleum fracturing propping agent based on tailing utilization comprises the following steps:

s1, respectively measuring the plate tailings, the high iron ore and the bauxite, and respectively putting the measured plate tailings, the high iron ore and the bauxite into a ball mill;

s2, grinding the plate tailings, the high-iron ore and the bauxite by using a ball mill, and discharging qualified fine materials from a discharge hole;

s3, when the ball mill is started, the timer and the monitor start to work, the timer monitors the grinding time, and the monitor monitors the discharging condition;

s4, transmitting the monitoring picture of the monitor to a control center, comparing the monitoring picture with a picture preset by the control center, and when the comparison is consistent, indicating that the grinding is finished and the discharging port does not discharge any more;

s5, after grinding, closing the ball mill and the timer by the controller, collecting data displayed by the timer at the moment, and collecting the type and the amount of ground mineral aggregates;

s6, calculating the grinding efficiency of the mineral aggregate according to the type, the amount and the time of the collected mineral aggregate, comparing the grinding efficiency data with efficiency data preset in a database, and controlling the grinding efficiency;

s7, metering the ground mineral aggregate powder, wherein the fineness of the powder is 500 meshes, and mixing the metered powder;

s8, adding 15% by mass of water into the mixed raw materials, stirring the raw materials through a stirring shaft at the rotating speed of 300r/min, and fully polishing to obtain a ceramsite raw material with the particle size of 70 meshes;

and S9, calcining the ceramsite raw material in a rotary kiln, and sintering at high temperature and naturally cooling to obtain the petroleum fracturing propping agent.

In this embodiment, in S8, water is pumped by the water pump and delivered by the water pipe, and when water is delivered, the flow rate of water is monitored by the flow rate sensor, and when the water reaches a predetermined amount, the delivery is stopped.

In this embodiment, the water pipe divide into 10 sectors, all sets up pressure sensor in 10 sectors, gathers the pressure data of the different sectors of water pipe through pressure sensor, transmits the data of gathering to control center, when there is the difference in the data of transmission, finds out the sector that difference data corresponds, overhauls.

In this embodiment, in S7, the plate tailings and the high iron ore powder are first put into a stirring device, stirred for 40min at a stirring speed of 350r/min, and then the bauxite powder is added into the stirring device, and stirred for 40min at a stirring speed of 350r/min, so as to complete the mixing of the raw materials.

In this embodiment, in S9, the ceramsite raw material is calcined in a rotary kiln, the temperature in the rotary kiln is monitored by a temperature monitor, the ceramsite raw material is preheated at 400 ℃ for 40min, and then the ceramsite raw material is calcined at 1200 ℃ for 240min, wherein the rotation speed of the rotary kiln is 0.67 rpm.

In this embodiment, in S2, qualified fine material is discharged from the discharge gate, collects the fine material through the collecting box, and the bottom of collecting is equipped with the weigher, and the weigher is measured the weight of collecting box, and measurement data transmits to control center, contrasts with the data that control center predetermines, and when reaching preset data, the alarm sounds, reminds to change the collecting box.

In this example, in S3, the ball mill was operated empty for 24 hours before grinding, then the material and 1/3 number of steel balls were added and the operation was carried out for 24 hours, and the steel balls added to 2/3 number were operated for 48 hours.

Through the preparation process of the petroleum fracturing propping agent based on tailing utilization provided by the first, second, third, fourth and fifth embodiments, the grinding efficiency can be controlled, the maintenance efficiency of a water pipe can be improved, and the third embodiment is the best embodiment.

The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.