阅读说明：本技术 一种光卤石盐田的矿物采收方法 (Mineral harvesting method for carnallite salt pan ) 是由 王石军 刘万平 哈占方 张娟 王罗海 严群雄 刘斌山 于 2020-05-21 设计创作，主要内容包括：本发明公开一种光卤石盐田的矿物采收方法,包括：将光卤石盐田排水,直至光卤石矿物的表层部分裸露；用挖掘机收拢光卤石矿物,在光卤石盐田内形成鱼刺状的堆积矿带,堆积矿带包括主路、及与主路连通的多条支路,主路、支路的宽度按照运输工具移动时的需要设定；以主路为基准由远及近地采挖支路两侧的光卤石矿物,运输光卤石矿物的运输工具沿支路、主路运输；以主路的入口为基准由远及近地采挖主路两侧的光卤石矿物,运输光卤石矿物的运输工具沿主路运输。本申请提供一种光卤石盐田的矿物采收方法,利用挖掘机收拢光卤石矿物形成鱼刺状的堆积矿带,覆盖盐田底板,不仅提供了供运输用汽车行走的主路和支路,不会伤害盐田底板,使得采收快速、高效。(The invention discloses a mineral harvesting method for a carnallite salt pan, which comprises the following steps: draining the carnallite salt pan until the surface layer part of the carnallite mineral is exposed; collecting carnallite minerals by an excavator, forming a fishbone-shaped stacking ore zone in the carnallite salt field, wherein the stacking ore zone comprises a main path and a plurality of branch paths communicated with the main path, and the widths of the main path and the branch paths are set according to the requirements when a transport means moves; mining and digging carnallite minerals on two sides of the branch from far to near by taking the main road as a reference, and transporting the carnallite minerals by a transportation tool along the branch and the main road; and (3) mining and excavating the carnallite minerals on two sides of the main road from far to near by taking the inlet of the main road as a reference, and transporting the carnallite minerals by using a transporting tool along the main road. The application provides a mineral harvesting method of carnallite salt pan utilizes the excavator to draw in the carnallite mineral and form the heap ore deposit area of fishbone form, covers the salt pan bottom plate, not only provides main road and the branch road that supplies the transportation to use the car to walk, can not harm the salt pan bottom plate for gather fast, high-efficient.)

1. A mineral recovery method for a carnallite salt pan is characterized by comprising the following steps:

step S1, draining the carnallite salt pan until the surface layer part of the carnallite mineral in the carnallite salt pan is exposed;

step S2, collecting the carnallite minerals by an excavator, and forming a fishbone-shaped ore accumulation zone in the carnallite salt pan, wherein the ore accumulation zone comprises a main path (1) and a plurality of branch paths (2) communicated with the main path (1), and the widths of the main path (1) and the branch paths (2) are set according to the requirements when a transport vehicle moves;

step S3, mining and excavating carnallite minerals on two sides of the branch road (2) from far to near by taking the main road (1) as a reference, and transporting the carnallite minerals by a transporting tool along the branch road (2) and the main road (1);

and S4, mining and excavating the carnallite minerals on two sides of the main road (1) from far to near by taking the inlet of the main road (1) as a reference, and transporting the carnallite minerals by a transporting tool along the main road (1).

2. The method for mineral recovery in a carnallite salt pan as claimed in claim 1 wherein in step S1, a bittern discharge chute is provided at the edge of said carnallite salt pan, and water in said carnallite salt pan is discharged by flowing through said bittern discharge chute.

3. The method for recovering minerals from a carnallite salt pan as claimed in claim 1 wherein in step S1, more than 80% of the surface layer of the carnallite mineral is exposed.

4. The method for mineral recovery in carnallite salt pan as claimed in claim 1 wherein in step S2, the branch width of said branch (2) and the spacing between adjacent branches are determined according to the width of the excavator and the maximum digging radius.

5. The method for mineral recovery in carnallite salt pan according to claim 1 wherein in step S2, said branches (2) are divided on both sides of said main path (1) and are distributed symmetrically or irregularly.

6. The method for mineral recovery in carnallite salt pan as claimed in claim 1 wherein in step S3, the branch (2) is reserved with non-recoverable area on both sides to ensure the safety of the branch.

Technical Field

The invention relates to the technical field of mining production, in particular to a mineral harvesting method for a carnallite salt field.

Background

The Qinghai Kerr sweat salt lake is a domestic large potash fertilizer production base, and the annual production scale of potash fertilizers reaches about 500 ten thousand tons. The main process of producing potash fertilizer is to mine and convey intercrystalline brine to a large-area salt pond (commonly called salt field) which is constructed manually, the salt field naturally evaporates and solarizes to form carnallite ore by utilizing solar energy, then the carnallite ore is mined and sent to a processing workshop to produce the potash fertilizer.

The method for mining carnallite in the salt pan generally comprises two methods, one method is commonly called dry mining, carnallite ore is hauled in the salt pan by an excavator and an automobile and is transported to a processing workshop, the other method is commonly called water mining, carnallite ore pulp is intelligently and mechanically harvested by a water mining ship and then is transported to the processing workshop through a pipeline, the carnallite ore harvesting operation in the current water mining mode becomes mainstream, but the dry mining mode is still used for improving the utilization rate of potassium resources and adapting to different potassium fertilizer production processes.

Considering the large-area evaporation efficiency of the salt pan, the area of the carnallite salt pan in the mining area reaches 100km²Above, each salt pan is basically 5km²About 60 ten thousand tons of potash fertilizer is produced every year, and the quantity of carnallite ore transported every year is as high as more than 600 ten thousand tons, so the efficiency and quality of producing the potash fertilizer are directly influenced by the harvesting method. In the existing dry mining method, because the area of the salt field is large, the mining routes of machines such as excavators, automobiles and the like in the salt field are random, and the salt field is directly harvested on the surface of the salt field, so that the machines such as the excavators, the automobiles and the like easily damage the bottom plate of the salt field, the quality of minerals is easily influenced, and the production quality of potash fertilizers is further influenced.

Disclosure of Invention

The invention aims to provide a mineral harvesting method for a carnallite salt field, which aims to solve the problems that in the prior art, the bottom plate of the salt field is easy to damage and the quality of minerals is influenced because machines such as excavators, automobiles and the like are directly and randomly harvested on the surface of the salt field.

In order to achieve the above purpose, the invention provides the following technical scheme: a method for mineral recovery in carnallite salt pan, comprising the steps of:

step S1, draining the carnallite salt pan until the surface layer part of the carnallite mineral in the carnallite salt pan is exposed;

step S2, collecting the carnallite mineral by an excavator, forming a fishbone-shaped stacking ore zone in the carnallite salt pan, wherein the stacking ore zone comprises a main path and a plurality of branch paths communicated with the main path, and the widths of the main path and the branch paths are set according to the requirements when the transportation tool moves;

step S3, digging carnallite minerals at two sides of the branch road from far to near by taking the main road as a reference, and transporting the carnallite minerals by a transportation tool along the branch road and the main road;

and step S4, mining and excavating the carnallite minerals on two sides of the main road from far to near by taking the inlet of the main road as a reference, and transporting the carnallite minerals by a transportation tool along the main road.

Further, in step S1, a bittern discharge chute is provided at the edge of the carnallite salt pan, and water in the carnallite salt pan is discharged by flowing through the bittern discharge chute.

Further, in step S1, 80% or more of the surface layer of the carnallite mineral is exposed.

Further, in step S2, the branch widths of the branches and the intervals between adjacent branches are determined according to the width of the excavator and the maximum excavating radius.

Further, in step S2, the branches are respectively disposed on two sides of the main path and symmetrically distributed or irregularly distributed.

Further, in step S3, two sides of the branch are reserved with an unavailable area to ensure the safety of the branch.

Compared with the prior art, the mineral harvesting method for the carnallite salt pan provided by the invention has the following advantages:

the application provides a method for harvesting minerals in a carnallite salt pan, wherein the carnallite minerals are collected by an excavator to form a fishbone-shaped accumulated ore zone, the fishbone-shaped accumulated ore zone covers a salt pan bottom plate, a main road and a branch road for a transportation vehicle to travel are provided, the vehicle does not directly contact the salt pan bottom plate, and the salt pan bottom plate is not damaged except that a harvesting route is fixed, so that the harvesting is rapid and efficient; not only protects the bottom plate of the salt field, but also does not influence the quality of minerals, does not pollute the mineral resources, and is convenient for orderly harvesting carnallite in large-area dry-mining salt fields.

Drawings

Various other advantages and benefits will become apparent to those of ordinary skill in the art upon reading the following detailed description of the preferred embodiments. The drawings are only for purposes of illustrating the preferred embodiments and are not to be construed as limiting the invention. In the drawings:

FIG. 1 is a flow chart illustrating the steps of a preferred embodiment of a method for recovering minerals from a carnallite salt pan provided in accordance with the present invention;

fig. 2 is a schematic view of the structure of the carnallite field in the method for recovering minerals from the carnallite field shown in fig. 1.

Reference numerals:

1-main path, 2-branch path.

Detailed Description

The present invention provides many applicable inventive concepts that can be embodied in a wide variety of specific contexts. The specific examples described in the following embodiments of the present invention are merely illustrative of specific embodiments of the present invention and do not limit the scope of the invention.

The invention is further described with reference to the following figures and detailed description of embodiments.

As shown in fig. 1 to 2, wherein fig. 1 is a flow chart illustrating the steps of a mineral recovery method for a carnallite salt field according to a preferred embodiment of the present invention; fig. 2 is a schematic view of the structure of the carnallite field in the method for recovering minerals from the carnallite field shown in fig. 1.

In the present embodiment, the area of the carnallite salt pan is 5km²The mineral recovery method of the carnallite salt pan comprises the following steps:

step S1, draining the carnallite salt pan until the surface layer part of the carnallite mineral in the carnallite salt pan is exposed;

step S2, collecting the carnallite mineral by an excavator, and forming a fishbone-shaped stacking ore zone in the carnallite salt pan, wherein the stacking ore zone comprises a main path 1 and a plurality of branch paths 2 communicated with the main path 1, and the widths of the main path 1 and the branch paths 2 are set according to the requirements when a transport means moves;

step S3, excavating the carnallite minerals on two sides of the branch 2 from far to near by taking the main road 1 as a reference, and transporting the carnallite minerals by a transporting tool along the branch 2 and the main road 1;

step S4, digging carnallite minerals on both sides of the main road 1 from far to near with the entrance of the main road 1 as a reference, and transporting the carnallite minerals along the main road 1 by a transportation means.

The application provides a method for harvesting minerals in a carnallite salt pan, wherein the carnallite minerals are collected by an excavator to form a fishbone-shaped accumulated ore zone, the fishbone-shaped accumulated ore zone covers a salt pan bottom plate, a main road and a branch road for a transportation vehicle to travel are provided, the vehicle does not directly contact the salt pan bottom plate, and the salt pan bottom plate is not damaged except that a harvesting route is fixed, so that the harvesting is rapid and efficient; not only protects the bottom plate of the salt field, but also does not influence the quality of minerals, does not pollute the mineral resources, and is convenient for orderly harvesting carnallite in large-area dry-mining salt fields.

The following steps are described in detail:

the mineral recovery method of the carnallite salt pan comprises the following steps:

and step S1, draining the carnallite salt pan until the surface layer part of the carnallite mineral in the carnallite salt pan is exposed.

The carnallite salt pan in the mining area is built according to the terrain, the area is generally large, the shape is irregular, and dry mining carnallite is convenient to collect only by draining water and exposing carnallite minerals.

The bittern discharge chute openings are formed in the edges of the carnallite salt pan, and water in the carnallite salt pan is discharged in a self-flowing mode through the bittern discharge chute openings, so that convenience and rapidness are achieved.

The surface layer of the carnallite mineral is more than 80% exposed, and when the exposed area is large, the harvesting is convenient.

Step S2, collecting the carnallite minerals by an excavator, and forming a fishbone-shaped stacking ore zone in the carnallite salt pan, wherein the stacking ore zone comprises a main path 1 and a plurality of branch paths 2 communicated with the main path 1, and the widths of the main path 1 and the branch paths 2 are set according to the requirements when the transportation tool moves.

The stacking ore zone refers to a structure formed by stacking raw ores in the carnallite salt field, the existing harvesting route is fixed and lifted to a certain height, and the damage to a salt field bottom plate during harvesting and transportation is avoided; in order to ensure that the quality of the minerals is not influenced, when the minerals are collected to form a stacking mineral belt, lean minerals in other salt fields cannot be introduced, and other non-pollution mineral sources can be selected.

The fishbone-shaped accumulation ore belt covers the salt pan bottom plate, a main road and a branch road for the transportation vehicle to walk are provided, the vehicle does not directly contact the salt pan bottom plate, and the salt pan bottom plate is not damaged except for the fixed route, so that the salt pan bottom plate is harvested quickly and efficiently.

In this embodiment, the upper strata of piling up the ore deposit area makes a round trip to roll and level through the excavator, improves branch road 2 the intensity of main road 1 when protecting the salt pan bottom plate, still is favorable to transporting carnallite mineral with the car that the loading capacity is big, improves the efficiency of gathering.

The main path 1 is determined according to the area and the shape of the carnallite salt pan, and the branch width of the branch path 2 and the distance between the adjacent branch paths are determined according to the width and the maximum digging radius of the excavator.

The branches 2 are respectively arranged on two sides of the main path 1 and are symmetrically or irregularly distributed. In this embodiment, for convenience of illustration, the carnallite salt pan is a regular rectangle, the plurality of branches 2 are uniformly spaced and perpendicular to the main path 1, and in actual conditions, the general shape of the carnallite salt pan is irregular, and the branches 2 may be distributed symmetrically or irregularly, may form a certain included angle with each other, or may be parallel to each other.

And step S3, excavating the carnallite minerals on two sides of the branch 2 from far to near by taking the main road 1 as a reference, and transporting the carnallite minerals by a transporting tool along the branch 2 and the main road 1.

And two sides of the branch are reserved with non-mining areas to ensure the safety of the branch. The excavated carnallite minerals are accumulated on two sides of the branch 2, so that the automobile is convenient to pull and transport.

After the carnallite minerals on the two sides of the branch 2 are transported, the branch formed by stacking the carnallite minerals is also collected and transported out by a vehicle.

Step S4, digging carnallite minerals on both sides of the main road 1 from far to near with the entrance of the main road 1 as a reference, and transporting the carnallite minerals along the main road 1 by a transportation means.

After the carnallite minerals on the two sides of the main road 1 are pulled and transported, the main road formed by stacking the carnallite minerals is also harvested and transported out by a vehicle to complete the orderly harvesting of the whole salt pan.

It should be noted that the above-mentioned embodiments illustrate rather than limit the invention, and that those skilled in the art will be able to design alternative embodiments without departing from the scope of the appended claims. In the claims, any reference signs placed between parentheses shall not be construed as limiting the claim. The word "comprising" does not exclude the presence of elements or steps not listed in a claim.