Low-grade solid potassium chloride ore solid-to-liquid method

A potassium chloride ore, low-grade technology, applied in the field of salt chemical industry, can solve the problems of low grade of solid potassium ore, and achieve the effects of improving the utilization rate, improving the repeated utilization rate and saving water

Inactive Publication Date: 2012-07-18
格尔木藏格钾肥有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the grade of solid potassium ore is low, and it must b

Method used

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  • Low-grade solid potassium chloride ore solid-to-liquid method
  • Low-grade solid potassium chloride ore solid-to-liquid method

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0032] Example 1.

[0033] The technical scheme of the present invention mainly dissolves low-grade solid potassium chloride in the mine section east of the Chaerhan Salt Lake Railway.

[0034] Technical scheme of the present invention ： The proportion of fresh water and brine; the method of dissolving ore; the path of dissolving ore. The design is to inject 245 million cubic meters of desalinated brine each year. According to the dry area of ​​the Chaerhan Salt Lake Mine, the amount of fresh water and tail brine required to be recharged is 9.92×10 8 m 3 / Year and 3.97×10 9 m 3 / year. According to the annual recovery of 124 million cubic meters of mineralized brine, the actual amount of desalinated brine added to the mining area each year is 121 million cubic meters. It can be seen that it is necessary to continuously fill the brine for 41 years so that the balance of brine mining can be achieved so that the depth of brine mining can be reduced. The current 16 meters is reduced to...

Example Embodiment

[0053] Example 2.

[0054] The technical scheme of the present invention mainly dissolves low-grade solid potassium chloride in the mine section east of the Chaerhan Salt Lake Railway.

[0055] Technical scheme of the present invention ： The proportion of fresh water and brine; the method of dissolving ore; the path of dissolving ore. The design is to inject 245 million cubic meters of desalinated brine each year. According to the dry area of ​​the Chaerhan Salt Lake Mine, the amount of fresh water and tail brine required to be recharged is 9.92×10. 8 m 3 / Year and 3.97×10 9 m 3 / year. According to the annual recovery of 124 million cubic meters of ore-forming brine, the actual annual addition of desalinated brine to the mining area is 121 million cubic meters. It can be seen that it takes 41 years of continuous brine irrigation to achieve the balance of brine mining so that the depth of brine mining can be reduced. The current 16 meters has been reduced to 4 meters.

[0056] The b...

Example Embodiment

[0074] Example 3.

[0075] The technical scheme of the present invention mainly dissolves low-grade solid potassium chloride in the mine section east of the Chaerhan Salt Lake Railway.

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Abstract

The invention relates to the technical field of salt chemical industry, in particular to a low-grade solid potassium chloride ore solid-to-liquid method for producing low-grade solid potassium chloride ores after dissolving old brine and fresh water according to a certain ratio by utilizing a surface ore dissolving method. The method disclosed by the invention comprises the following steps: 1, a step of introducing the fresh water; 2, a step of introducing the old brine; 3, a step of blending the brine; and 4, a step of conveying the brine to prepare into a potash fertilizer. According to the invention, the flow direction of water in original rivers and lakes to the east of the Qarhan Salt Lake Railway is changed to dissolve the low-grade potassium ores in a mining area, which cannot be directly mined and utilized. Therefore, not only is the repeated utilization rate of the water improved and the service life of a mine is prolonged by dissolving the ores, but also the brine obtained after ore dissolving is returned to the salt lake mining area, the old brine generated after producing the potash fertilizer by mining is all discharged into the ore dissolving engineering to be recycled, the reuse rate of the river is greatly improved, a closed cycle of water resources is formed, the water is furthest saved and the drainage of wastewater is avoided, so that the natural ecological environment of the water resources and the mine resources in the salt lake mining area is protected.

Description

technical field [0001] The invention relates to the technical field of salt chemical industry, in particular to a method for solid-transferring low-grade solid potassium chloride ore into liquid by using a surface ore-dissolving method in a certain proportion of old brine and fresh water. Background technique [0002] Since the development of Salt Lake resources, the old brine from the east of the railway and the Salt Lake Group has been discharged into Tuanjie Lake, and the area around the Tuanjie Lake has been filled with "old brine", which contains a large amount of bischofite. Bischofite with a thickness of about 0.3m has been deposited on the bottom of the lake, so the old brine caused "magnesium damage" to the ore deposit, which seriously affected the reuse of salt lake resources. The ore-forming brine in the north of Chaerhan, the Lankong Potash Fertilizer Plant and its south are all aging, and are still infiltrating northward, eroding the raw ore brine, and destroyin...

Claims

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Application Information

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IPC IPC(8): C01D3/08C05D1/04
Inventor 肖永明
Owner 格尔木藏格钾肥有限公司
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