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Recovery method for solid potash ores

The technology of a solid potassium ore and a mining method, which is applied in the comprehensive field of salt lake resources, can solve problems such as inability to mine ultra-low-grade potassium ore, and achieve the effects of easy operation, low cost and wide application prospect.

Inactive Publication Date: 2015-01-28
格尔木藏格钾肥有限公司 +1
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] In order to overcome the defect that the existing technology cannot mine ultra-low-grade potassium ore, the invention provides a high-efficiency recovery method for ultra-low-grade solid potassium ore, which can be applied to potassium with a solid potassium chloride content of 0.1 to 1%. mining of mine

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  • Recovery method for solid potash ores

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Effect test

Embodiment 1

[0030] Embodiment 1: a kind of high-efficiency recovery method of ultra-low grade solid potash ore, comprises the following steps:

[0031] (1) Excavate a channel in potassium mining area, this channel is inverted trapezoidal, wide 3 meters, deep 6 meters, this channel is lead-in channel, and the mass percent of the potassium in this mining area is 0.1% in potassium chloride;

[0032] (2) Introducing an aqueous solution rich in magnesium chloride in the channel, the mass percent of magnesium chloride in the aqueous solution is 27%, the mass percent of potassium chloride is 0.067%, and the mass percent of sodium chloride is 0.60.33%; keep the aqueous solution full of the whole aisle;

[0033] (3) After 1 year, excavate two collection passages parallel to the introduction passage at 30 meters on both sides of the introduction passage. The collection passages are inverted trapezoidal, 3 meters wide and 6 meters deep; In these two channels; the mass percentage of magnesium chlori...

Embodiment 2

[0035] Embodiment 2: a kind of high-efficiency recovery method of ultra-low grade solid potash ore, comprises the following steps:

[0036] (1) Excavate a channel in the potassium mining area, this channel is inverted trapezoidal, wide 6 meters, deep 6 meters, this channel is the lead-in channel, and the mass percent of the potassium in this mining area is 0.5% in potassium chloride;

[0037] (2) Introducing an aqueous solution rich in magnesium chloride in the channel, the mass percent of magnesium chloride in the aqueous solution is 22.5%, the mass percent of potassium chloride is 0.057%, and the mass percent of sodium chloride is 0.330.6%; keep the aqueous solution full of the whole aisle;

[0038] (3) After 2 years, excavate two collection passages parallel to the introduction passage at 50 meters on both sides of the introduction passage. The collection passages are inverted trapezoidal, 3 meters wide and 8 meters deep; In these two channels; the mass percentage of magne...

Embodiment 3

[0040] Embodiment 3: a kind of high-efficiency recovery method of ultra-low grade solid potash ore, comprises the following steps:

[0041] (1) Excavate a passage in the potassium mining area, this passage is inverted trapezoidal, wide 6 meters, deep 6 meters, this passage is lead-in passage, and the mass percentage of the potassium in this mining area is 0.25% in terms of potassium chloride;

[0042] (2) Introducing an aqueous solution rich in magnesium chloride in the channel, the mass percent of magnesium chloride in the aqueous solution is 22.5%, the mass percent of potassium chloride is 0.057%, and the mass percent of sodium chloride is 0.330.6%; keep the aqueous solution full of the whole aisle;

[0043](3) After 1 year, excavate two collection passages parallel to the introduction passage at 50 meters on both sides of the introduction passage. The collection passages are inverted trapezoidal, 3 meters wide and 8 meters deep; In these two channels; the mass percentage o...

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Abstract

The invention discloses a recovery method for solid potash ores. The recovery method comprises the following steps of 1) digging a channel serving as a solvent introducing channel in a solid potash orefield, wherein a solvent comprises magnesium chloride, and solid potassium chloride in the solid potash orefield accounts for 0.1 to 1 percent; 2) introducing the solvent into the channel; 3) allowing the solvent to infiltrate ore beds on two sides and be mixed with solid minerals, and ensuring the solid-liquid mixing time is 1 to 2 years; 4) digging two channels serving as brine collecting channels at positions, 30 to 50 meters away from the introducing channel, on the two sides respectively, and allowing potassium-containing brine to be collected in the channels after the potassium-containing brine seeps, wherein the channels are connected with a brain delivery channel so as to deliver the potassium-containing brine to a processing site for processing. An infiltration-absorption principle is utilized, magnesium chloride-containing water solution is used for infiltrating and absorbing the solid potash ores, manmade pollution to the orefield is avoided, and the recovery method is an environment-friendly technology; potassium resources of ultralow grade solid potash ores which are not suitable for direct exploitation and utilization is efficiently exploited, and the recovery method has a wide application prospect in the aspect of developing the potassium resources of salt lakes.

Description

technical field [0001] The invention belongs to the technical field of comprehensive salt lake resources, and specifically relates to a method for efficiently recovering ultra-low-grade solid potassium ore in the Chaerhan Salt Lake area by using the principle of infiltration-absorption, the theory of porous medium seepage and the principle of liquid internal pressure. technical background [0002] Potassium fertilizer is one of the important factors related to my country's agricultural safety. Chaerhan Salt Lake is the main production base of potassium fertilizer in my country. The lake area has the largest potassium salt deposit with industrial mining value in China. Solid ore and liquid ore coexist in this deposit, of which solid potassium Potassium ore accounts for about 55% of the total resources (potassium in solid ore exists in the form of carnallite and potassium halite), but the ore layer of solid ore is relatively thin, low in grade, dispersed and discontinuous, and o...

Claims

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Application Information

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IPC IPC(8): E21B43/28
CPCE21C41/20
Inventor 肖永明张萍王敏龚国力时历杰张有平张志宏许建新鲍永华赵有璟杨红军
Owner 格尔木藏格钾肥有限公司