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Desliming method for low-grade earth surface solid potassium ores

A solid potash ore, low-grade technology, applied in the field of potash ore desliming, can solve the problems of low recovery rate, reduced device production capacity, low grade, etc., and achieve the effect of simple and reasonable process

Active Publication Date: 2012-02-15
BLUESTAR LEHIGH ENG INST CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0002] my country is a country that lacks potassium ore resources, and in the potassium ore resources, brine potassium ore is the main one, and the solid potassium salt ore is very small, accounting for only about 2%. A considerable part of the solid potassium ore is potassium chloride. Low surface solid ores, most of these surface solid ores cannot be used due to low grade and large mud content, if these surface solid ores are directly flotation, it will lead to poor product quality, large consumption of flotation agents, The recovery rate is low, the production capacity of the device is greatly reduced, and the economic benefit is poor.

Method used

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Examples

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Embodiment 1

[0013] Embodiment 1, with reference to figure 1 , a method for desliming low-grade surface solid potassium ore. The surface solid ore with a KCl content of 4.0% and a mud content of 50.0% and saturated brine are added to the slurry tank at a constant speed in a certain proportion, and the full mixed flow is carried out continuously Stirring, control the pulp concentration to 10%, the pulp stirring time is 100 minutes, then use the slurry pump to transport the pulp to the hydrocyclone for a stage of desliming, control the inlet pressure of the cyclone to 0.30MPa, so that most of the fine mud enters the hydrocyclone The flow device overflows and flows to the fine mud settlement tank by itself. The coarse-grained material enters the bottom flow of the cyclone and flows to the bottom flow buffer tank of the cyclone by itself, and then adds an appropriate amount of saturated brine to the buffer stirring tank to control the concentration of the slurry to 10%, and then uses the slurr...

Embodiment 2

[0014] Embodiment 2, with reference to figure 1 , a method for desliming low-grade surface solid potassium ore. The surface solid ore with a KCl content of 12.0% and a mud content of 6.0% and saturated brine are added to the slurry tank at a constant speed in a certain proportion, and the full-mixed flow is carried out continuously Stirring, control the pulp concentration to 40%, the pulp stirring time is 20 minutes, then use the slurry pump to transport the pulp to the hydrocyclone for a stage of desliming, control the inlet pressure of the cyclone to 0.10MPa, so that most of the fine mud enters the hydrocyclone The flow device overflows and flows to the fine mud settlement tank by itself. The coarse-grained material enters the bottom flow of the cyclone and flows to the bottom flow buffer tank of the cyclone, and then adds an appropriate amount of saturated brine to the buffer stirring tank to control the pulp concentration to 40%, and then uses a slurry pump to transport th...

Embodiment 3

[0015] Embodiment 3, with reference to figure 1 , a method for desliming low-grade surface solid potassium ore. The surface solid ore with a KCl content of 8.0% and a mud content of 20.0% and saturated brine are added to the slurry tank at a constant speed in a certain proportion, and the full mixed flow is carried out continuously Stir, control the pulp concentration to 20%, and the pulp stirring time for 40 minutes, then use the slurry pump to transport the pulp to the hydrocyclone for a stage of desliming, control the inlet pressure of the cyclone to 0.25MPa, so that most of the fine mud enters the cyclone The flow device overflows and flows to the fine mud settlement tank by itself. The coarse-grained material enters the bottom flow of the cyclone and flows to the bottom flow buffer tank of the cyclone, and then adds an appropriate amount of saturated brine to the buffer stirring tank to control the pulp concentration to 30%, and then uses a slurry pump to transport the pu...

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Abstract

The invention relates to a desliming method for low-grade earth surface solid potassium ores. The desliming method is characterized by comprising the following steps of: adding low-grade earth surface solid ores and saturated brine into a slurry mixing tank at constant speed, controlling the concentration of ore slurry, and stirring continuously in a mode of complete mixing flow; conveying the ore slurry to a hydrocyclone by using a slag slurry pump to perform a section of classification desliming, so that separated fine silt enters the hydrocyclone for overflowing and flows into a fine silt sedimentation pond, and coarse grain materials enter a bottom flow of the hydrocyclone and flow to a bottom flow surge tank of the hydrocyclone automatically; adding the saturated brine into the surgetank, and controlling the concentration of the ore slurry to be between 10 and 40 percent; and conveying the ore slurry to a vibration screen by using the slag slurry pump to perform two sections of classification desliming, and sieving, so that the fine silt enters undersize products of the vibration screen and flows into the fine silt sedimentation pond, and oversize products of the vibration screen are deslimed ore concentrates. The method has a simple and reasonable process, and the prepared deslimed ore concentrates can be used as floated raw materials. The total desliming rate of two sections of desliming is over 90 percent.

Description

technical field [0001] The invention relates to a desliming method of potassium ore, in particular to a desliming method of low-grade surface solid potassium ore. Background technique [0002] my country is a country that lacks potassium ore resources, and in the potassium ore resources, brine potassium ore is the main one, and the solid potassium salt ore is very small, accounting for only about 2%. A considerable part of the solid potassium ore is potassium chloride. Low surface solid ores, most of these surface solid ores cannot be used due to low grade and large mud content, if these surface solid ores are directly flotation, it will lead to poor product quality, large consumption of flotation agents, The recovery rate is low, the production capacity of the device is greatly reduced, and the economic benefit is poor. Contents of the invention [0003] The technical problem to be solved by the present invention is to propose a method for desliming low-grade surface solid...

Claims

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Application Information

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IPC IPC(8): B03B5/00B03B5/34B07B1/28
Inventor 张大义马金元张守祥许爱民吴志刚夏义忠陶文平
Owner BLUESTAR LEHIGH ENG INST CO LTD
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