阅读说明：本技术 一种耐高温耐磨保温高效的热矿仓及其使用方法 (High-temperature-resistant, wear-resistant, heat-insulating and efficient hot ore bin and using method thereof ) 是由 卜二军 徐涛 任国良 张勇 王利 周海川 刘志国 于 2019-09-23 设计创作，主要内容包括：一种耐高温耐磨保温高效的热矿仓,所述耐高温耐磨保温高效的热矿仓包括：垂直仓和圆锥形料斗,所述圆锥形料斗位于垂直仓下部,竖直截面呈倒三角状；热矿仓外壁上安装有4个锥体流化器(9)、4个空气炮(8)、2个外排口(10),所述空气炮(8)、锥体流化器(9)、外排口(10)从上到下依次布置,都位于料斗靠下位置,安装位置按从高到低依次是空气炮、锥体流化口、外排口。锥体流化器和空气炮均在热矿仓外壁上对称分布。本发明的热矿仓的结构设计有效的避免了堵塞,并且可以不间断供料。(The utility model provides a high temperature resistant wear-resisting heat preservation efficient hot ore storehouse, high temperature resistant wear-resisting heat preservation efficient hot ore storehouse includes: the hopper comprises a vertical bin and a conical hopper, wherein the conical hopper is positioned at the lower part of the vertical bin, and the vertical section of the conical hopper is in an inverted triangle shape; the hot ore bin is characterized in that 4 cone fluidizers (9), 4 air guns (8) and 2 outer discharge ports (10) are arranged on the outer wall of the hot ore bin, the air guns (8), the cone fluidizers (9) and the outer discharge ports (10) are sequentially arranged from top to bottom and are positioned at the lower position of the hopper, and the air guns, the cone fluidizers and the outer discharge ports are sequentially arranged at the mounting positions from high to low. The cone fluidizer and the air cannons are symmetrically distributed on the outer wall of the hot ore bin. The structural design of the hot ore bin effectively avoids blockage and can supply materials uninterruptedly.)

1. The utility model provides a high temperature resistant wear-resisting heat preservation efficient hot ore storehouse which characterized in that, high temperature resistant wear-resisting heat preservation efficient hot ore storehouse includes: the hopper comprises a vertical bin and a conical hopper, wherein the conical hopper is positioned at the lower part of the vertical bin, and the vertical section of the conical hopper is in an inverted triangle shape; the hot ore bin is characterized in that 4 cone fluidizers (9), 4 air guns (8) and 2 outer discharge ports (10) are arranged on the outer wall of the hot ore bin, the air guns (8), the cone fluidizers (9) and the outer discharge ports (10) are sequentially arranged from top to bottom and are positioned at the lower position of the hopper, and the air guns, the cone fluidizers and the outer discharge ports are sequentially arranged at the mounting positions from high to low.

2. The high-temperature-resistant, wear-resistant, heat-insulating and efficient hot ore storage bin as claimed in claim 1, wherein a bin cover (13) is arranged at the top of the vertical bin and is horizontally placed, the bin cover comprises a permanent layer lining, the permanent layer lining is made of heat-resistant and wear-resistant RD series spray paint, the thickness of the permanent layer lining is 110-130 mm, the lining is fixed by an anchoring part, and a distributor (1) and a level indicator (2) are arranged on the bin cover.

3. The high temperature resistant, wear resistant, thermal insulating and efficient hot ore storage bin of claims 1-2, wherein the vertical bin and conical hopper comprise a steel structural shell and an inner liner.

4. The high-temperature-resistant, wear-resistant, heat-insulating and efficient hot ore storage bin according to claims 1-3, wherein the hot ore storage bin is provided with two hoppers.

5. The high-temperature-resistant, wear-resistant, heat-insulating and efficient hot ore bin as claimed in claims 1 to 4, wherein the hot ore bin shell is of a steel structure, the lining is fixed by the anchoring piece and is used for supporting and fixing the refractory castable of the thinner lining body, the shell is made of a common steel plate, and the anchoring piece of the lining is made of stainless steel and comprises the following components: ni: 19-22%, Cr: 24-26%, Si is less than or equal to 1.5%, Mn is less than or equal to 2.0%, C: 0.03-0.08%, S: 0.03% or less, P: 0.045% or less.

6. The high-temperature-resistant, wear-resistant, heat-insulating and efficient hot ore bin according to claims 1-5, wherein the stainless steel is made of: ni: 21%, Cr: 25%, Si: 0.9%, Mn: 1.8%, C: 0.06%, S: 0.023%, P: 0.03 percent.

7. The high-temperature-resistant, wear-resistant, heat-insulating and efficient hot ore bin as claimed in claims 1 to 6, wherein the lining of the hot ore bin comprises a heat-insulating layer, a permanent layer and a working layer, the permanent layer and the heat-insulating layer are sequentially arranged from inside to outside, the heat-insulating layer is made of RM-G light mullite spray paint, and the thickness of the heat-insulating layer is 80-100 mm; the permanent layer is made of heat-resistant and wear-resistant RD series spray paint, and the thickness of the permanent layer is 110-130 mm; the working layer is made of slag-resistant and wear-resistant RSK series castable, and the thickness of the working layer is 130-160 mm.

8. The high temperature resistant, wear resistant, thermal insulating and high efficiency hot ore storage bin of claims 1-7 wherein the weight of the vertical section lining does not exceed 100 tons; the weight of the liner in the conical hopper section is not more than 40 t.

9. The high-temperature-resistant, wear-resistant, heat-insulating and efficient hot ore bin according to claims 1-8, characterized in that the air cannon (8) and the conical hopper form an included angle of 30-50 degrees; the cone fluidizer (9) and the cone hopper form an included angle of 30-40 degrees; the outer discharge port (10) and the conical hopper form an included angle of 90 degrees.

10. The use method of the high-temperature-resistant, wear-resistant, heat-insulating and efficient hot ore storage bin as claimed in claims 1 to 9, characterized by comprising the following process steps:

(1) the hot ore powder is conveyed to the top of the hot ore bin through the bucket elevator conveyor, and the top of the bucket elevator conveyor is provided with a dust removing point dust removing device (12), so that the discharge of dust particles can be effectively reduced. The effective powder volume of the hot ore bin is 200m ³The hot ore bin is positioned on the load cell, the weighing device (7)The device is positioned at the lower middle position of the vertical bin, provides continuous solid material stock measurement under the ambient pressure and is used for accurately measuring the weight of hot ore powder;

(2) each hot ore bin is provided with two hoppers, two independent outlets supply materials to the two intermediate tanks under the action of gravity, a distributor is arranged in the middle of the top of each hot ore bin, the distributor is of an inverted Y-shaped structure, an outlet (14) of the distributor is cylindrical, hot ore powder is distributed in the distributor after being conveyed to the top of each hot ore bin through a bucket elevator conveyor, the hot ore powder is divided into two parts and respectively enters each hopper, the outlets of the distributor are vertically positioned on the inner sides of the hoppers, and under the action of gravity, the hot ore powder is respectively conveyed to the two intermediate tanks through a discharging chute pipeline;

(3) the air cannon is arranged at the position most prone to arching and blocking, intermittent air intake is adopted from the joint part of the vertical bin wall and the conical hopper to the lower part, material caking is mainly prevented, if the intermediate tank is not smooth in continuous blanking, the air cannon at the lower part of the hot ore bin is started, solid fluidization can be increased, hot ore powder is helped to be transferred from the hot ore bin to the intermediate tank, the air cannon can be started in an automatic or manual mode, and when the automatic blanking mode is started, once the intermediate tank is fluidized, the air cannon can be started, and the air cannon can be activated only when the fluidization is started;

(4) the front end of the cone fluidizer is provided with a fluidizing valve, the pneumatic ball valve releases fluidized nitrogen to the cone of the container, and the nitrogen is continuously sprayed to relieve vacuum caused by gaps of fine particles and improve the flow characteristic of hot mineral powder according to requirements, so that the material is in a fluidized state and is easy to feed;

(5) the outer discharging opening is located at a position close to the discharging opening of the hot ore bin and used for manually discharging during material blocking, a flange (11) and a combined ball valve (15) are installed below the position of the discharging opening and used for being connected with a lower device, and the combined ball valve is used for opening or closing discharging.

Technical Field

The invention relates to a hot ore bin, in particular to a high-temperature-resistant, wear-resistant, heat-insulating and efficient hot ore bin.

Background

Hot Ore Containment (HOC) systems are designed to deliver iron Ore fines to smelting reactors. The iron ore powder is usually preheated and pre-reduced in an iron ore powder rotary kiln, and then transferred to a blowing system. The discharge temperature of the iron ore powder at the outlet of the rotary kiln is about 400-800 ℃, and then the iron ore powder enters the hot ore bin through the bucket elevator, the hot ore bin firstly has the functions of high temperature resistance and wear resistance and resists erosion, and in addition, in order to keep the temperature of the material from being greatly reduced, the hot ore bin also needs to have the function of heat preservation in design. The phenomena of unsmooth blanking, material blockage and the like often occur in the production operation process of the hot ore bin, and the normal operation of production is greatly influenced. Therefore, the design of a high-temperature-resistant, wear-resistant and heat-insulating efficient hot ore bin becomes a problem to be solved urgently at present.

Disclosure of Invention

In order to solve the technical problems, the technical scheme adopted by the invention is as follows:

the utility model provides a high temperature resistant wear-resisting heat preservation efficient hot ore storehouse, high temperature resistant wear-resisting heat preservation efficient hot ore storehouse includes: the hopper comprises a vertical bin and a conical hopper, wherein the conical hopper is positioned at the lower part of the vertical bin, and the vertical section of the conical hopper is in an inverted triangle shape; the hot ore bin is characterized in that 4 cone fluidizers (9), 4 air guns (8) and 2 outer discharge ports (10) are arranged on the outer wall of the hot ore bin, the air guns (8), the cone fluidizers (9) and the outer discharge ports (10) are sequentially arranged from top to bottom and are positioned at the lower position of the hopper, and the air guns, the cone fluidizers and the outer discharge ports are sequentially arranged at the mounting positions from high to low.

Further, perpendicular storehouse top is established to storehouse lid (13), and the storehouse lid is placed for the level, and the storehouse lid contains permanent layer inside lining, and heat-resisting wear-resisting RD series spraying material is adopted to permanent layer inside lining, and thickness is at 110 ~ 130mm, and the inside lining adopts anchor assembly to fix, and the storehouse is covered and is provided with distributor (1) and charge level indicator (2).

Further, the vertical bin and conical hopper comprise a steel structural shell and an inner liner.

Further, the hot ore bin is provided with two hoppers.

Further, hot ore bin shell is the steel construction, and the inside lining adopts anchor assembly to fix for support and the refractory castable who fixes the thin lining body, the shell adopt ordinary steel sheet can, inside lining anchor assembly adopts stainless steel material, its composition is: ni: 19-22%, Cr: 24-26%, Si is less than or equal to 1.5%, Mn is less than or equal to 2.0%, C: 0.03-0.08%, S: 0.03% or less, P: 0.045% or less.

Further, the stainless steel material is: ni: 21%, Cr: 25%, Si: 0.9%, Mn: 1.8%, C: 0.06%, S: 0.023%, P: 0.03 percent.

Further, the lining of the hot ore bin comprises a heat insulation layer, a permanent layer and a working layer, wherein the working layer, the permanent layer and the heat insulation layer are sequentially arranged from inside to outside, the heat insulation layer is made of RM-G light mullite spray coating, and the thickness of the heat insulation layer is 80-100 mm; the permanent layer is made of heat-resistant and wear-resistant RD series spray paint, and the thickness of the permanent layer is 110-130 mm; the working layer is made of slag-resistant and wear-resistant RSK series castable, and the thickness of the working layer is 130-160 mm.

Further, the vertical section liner weighs no more than 100 kg; the weight of the liner in the conical hopper section is not more than 40 kg.

Furthermore, the air cannon (8) and the conical hopper form an included angle of 30-50 degrees; the cone fluidizer (9) and the cone hopper form an included angle of 30-40 degrees; the outer discharge port (10) and the conical hopper form an included angle of 90 degrees.

Further, the use method of the high-temperature-resistant, wear-resistant, heat-insulating and efficient hot ore bin comprises the following process steps:

(1) the hot ore powder is conveyed to the top of the hot ore bin through the bucket elevator conveyor, and the top of the bucket elevator conveyor is provided with a dust removing point dust removing device (12), so that the discharge of dust particles can be effectively reduced. The effective powder volume of the hot ore bin is 200m ³The hot ore bin is positioned on the load cell, the weighing device (7) is positioned at the lower position in the middle of the vertical bin, and continuous solid material stock measurement is provided under the environmental pressure for accurately measuring the weight of hot ore powder;

(2) each hot ore bin is provided with two hoppers, two independent outlets supply materials to the two intermediate tanks under the action of gravity, a distributor is arranged in the middle of the top of each hot ore bin, the distributor is of an inverted Y-shaped structure, an outlet (14) of the distributor is cylindrical, hot ore powder is distributed in the distributor after being conveyed to the top of each hot ore bin through a bucket elevator conveyor, the hot ore powder is divided into two parts and respectively enters each hopper, the outlets of the distributor are vertically positioned on the inner sides of the hoppers, and under the action of gravity, the hot ore powder is respectively conveyed to the two intermediate tanks through a discharging chute pipeline;

(3) the air cannon is arranged at the position most prone to arching and blocking, intermittent air intake is adopted from the joint part of the vertical bin wall and the conical hopper to the lower part, material caking is mainly prevented, if the intermediate tank is not smooth in continuous blanking, the air cannon at the lower part of the hot ore bin is started, solid fluidization can be increased, hot ore powder is helped to be transferred from the hot ore bin to the intermediate tank, the air cannon can be started in an automatic or manual mode, and when the automatic blanking mode is started, once the intermediate tank is fluidized, the air cannon can be started, and the air cannon can be activated only when the fluidization is started;

(4) the front end of the cone fluidizer is provided with a fluidizing valve, the pneumatic ball valve releases fluidized nitrogen to the cone of the container, and the nitrogen is continuously sprayed to relieve vacuum caused by gaps of fine particles and improve the flow characteristic of hot mineral powder according to requirements, so that the material is in a fluidized state and is easy to feed;

(5) the outer discharging opening is located at a position close to the discharging opening of the hot ore bin and used for manually discharging during material blocking, a flange (11) and a combined ball valve (15) are installed below the position of the discharging opening and used for being connected with a lower device, and the combined ball valve is used for opening or closing discharging.

The invention has the advantages and effects that:

the refractory material of the hot ore bin not only requires the refractory material to have good high-temperature performance, but also requires the refractory material to have smaller volume density and thermal conductivity coefficient. The heat-insulating layer is made of light mullite casting material, and is a refractory material which has excellent high-temperature performance and better heat-insulating effect. The working layer is made of RSK series castable with slag resistance and wear resistance, and is mainly characterized by wear resistance, erosion resistance, high strength, no slag adhesion and capability of reducing the consumption of the lining. The permanent layer is made of RD series heat-resistant and wear-resistant spray paint and is mainly characterized by high strength, good wear resistance, good thermal stability and anti-stripping property, and the integrity of the lining can be effectively maintained.

The material passes through the distributor and carries out the feeding from the feed inlet, and the material can form the material minizone in the welt inboard and pile up to make the not direct contact inside lining of back material, pound the material through the material and expect with the material motion of material abrasive material, can effectively avoid the hopper inboard directly to receive the impact and the wearing and tearing of material, the effectual resistant material of hopper inside lining of having protected has prolonged the life of the resistant material of hopper inside lining. The use of the air cannon and the cone fluidization port can increase the flow of materials and reduce the blockage of the materials, and the discharge port is used for manually discharging when the materials are blocked in the production process.

The invention can effectively prolong the service life of the lining plate of the hot ore bin, remarkably reduce the replacement and maintenance of the lining of the hot ore bin, reduce the blockage probability of materials and greatly improve the operating rate of the whole system. The device has the characteristics of material level monitoring, real-time weight monitoring, high temperature resistance, long service life, blockage prevention, high operation rate and the like.

The structural design of the hot ore bin effectively avoids blockage and can supply materials uninterruptedly.

Additional features and advantages of the invention will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. The objectives and other advantages of the invention will be realized and attained by the structure particularly pointed out in the written description and claims hereof.

Drawings

FIG. 1 is a schematic view of the high temperature resistant, wear resistant, heat insulating and efficient hot ore storage bin of the present invention.

1-a dispenser; 2-a level indicator; 3-steel plate outer shell; 4-an insulating layer; 5-a permanent layer; 6-a working layer; 7-a weighing device; 8-air cannon; 9-a cone fluidization port; 10-an outer discharge port; 11-a flange; 12-a dust removal device; 13-bin cover; 14-a dispenser outlet; 15-combination ball valve.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention are clearly and completely described below. It is to be understood that the embodiments described are only a few embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the described embodiments of the invention without any inventive step, are within the scope of protection of the invention.

The technical solution of the present invention will be further explained and illustrated with reference to the following specific examples.