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Removing method of high undissolved substances and low-grade solid potassium ore undissolved substances

A solid potash ore, low-grade technology, applied in potash fertilizers, alkali metal chlorides, inorganic fertilizers, etc., can solve the problems of difficulty in large-scale development and utilization of resources, difficult separation of minerals and insolubles, poor economic benefits, etc. The amount of resources that can be processed and utilized, the effect of improving the degree of development and utilization, and improving the utilization rate of processing

Active Publication Date: 2012-07-18
QINGHAI ZHONGHANG RESOURCE +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The current utilization method of this part of resources has the serious entrainment of insolubles to the mother liquor, relatively large potassium loss, and it is difficult to separate minerals from insolubles. The economic benefits are poor, and it is difficult to develop and utilize these resources on a large scale.

Method used

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  • Removing method of high undissolved substances and low-grade solid potassium ore undissolved substances
  • Removing method of high undissolved substances and low-grade solid potassium ore undissolved substances

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0006] Embodiment 1: get 100 tons of high insoluble matter solid potash ore, its mass component is potassium chloride 4.14%, insoluble matter is 49.59%, sodium chloride etc. 46.27%; With magnesium chloride saturated solution and light brine with weight ratio 1: The ratio of 0.05 is mixed at normal temperature and normal pressure for 5Min, and 150 tons of scrubbing medium is prepared; the solid potassium ore is mixed with the scrubbing medium prepared, and the slurry weight percentage concentration after mixing is 40%, and the mixed material is mixed at 40 rpm. The rotation speed of Min is forced to stir and scrub, and the scrubbing time is 20min; the slurry that has been scrubbed is adjusted to 20% by weight with a prepared scrubbing medium; Cyclone separation, the pressure at the inlet of the cyclone is controlled at 0.10Mpa; the bottom flow slurry of the cyclone is adjusted to 20% by weight with the prepared scrubbing medium, and then pumped into a multi-layer vibrating scree...

Embodiment 2

[0007] Embodiment 2: Get 100 tons of high insoluble solid potassium ore, its mass components are potassium chloride 3.51%, insoluble matter is 60.12%, sodium chloride etc. 36.37%; Use magnesium chloride saturated solution and fresh water with weight ratio 1:0.1 The ratio is mixed at normal temperature and pressure for 5Min to prepare 43 tons of scrubbing medium; the solid potassium ore is mixed with the prepared scrubbing medium, and the mixed slurry weight percentage concentration is 70%, and the mixed material is 120 turns / Min The speed of rotation is forced to stir and scrub, and the scrubbing time is 90min; the slurry that has been scrubbed is adjusted to 50% by weight with the scrubbing medium prepared; flow separation, the pressure at the inlet of the cyclone is controlled at 0.20Mpa; use the prepared scrubbing medium to adjust the concentration of the slurry weight percentage to 50%, and then pump it into a multi-layer vibrating screen for screening and separation. 32 t...

Embodiment 3

[0008] Embodiment 3: get 100 tons of high insoluble matter solid potash ore, its quality component is potassium chloride 6.5%, insoluble matter is 40.3%, sodium chloride etc. 53.2%; Use magnesium chloride saturated solution and fresh water with weight ratio 1:0.08 The ratio is mixed at normal temperature and pressure for 5Min, and 100 tons of scrubbing medium is prepared; the solid potassium ore is mixed with the scrubbing medium prepared, and the mixed slurry weight percentage concentration is 50%, and the mixed material is 80 rpm / Min The speed of rotation is forced to stir and scrub, and the scrubbing time is 60 minutes; the scrubbed slurry is adjusted to 30% by weight with the prepared scrubbing medium; the slurry after slurry is spun in a cyclone For flow separation, the pressure at the inlet of the cyclone is controlled at 0.15Mpa; the bottom flow slurry of the cyclone is adjusted to 40% by weight with the prepared scrubbing medium, and then pumped into a multi-layer vibra...

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Abstract

The invention belongs to the technical field of potassium extraction in a salt lake, and in particular relates to a removing method of high undissolved substances and low-grade solid potassium ore undissolved substances. The method consists of scrubbing medium preparation, scrubbing, size mixing, hydraulic cyclone, screening and precipitate halogen spraying. Through the technology processing, the removal rates of the high undissolved substances and the low-grade solid potassium ore undissolved substances are larger than or equal to 70%, the grade of raw ore potassium chloride is improved by 70-100%, and the requirement that floatation method is adopted to prepare the potassium chloride raw material is met. By using the method, the removal problems of the high undissolved substances (more than or equal to 20%) and the low-grade solid potassium ore (3-10% of KCl) undissolved substances are solved, so that the high undissolved substances and the low-grade solid potassium ore which can not be directly processed are subjected to undissolved substance removal and then prepared into the raw material of potassium chloride, the development utilization degree of potassium resources in a potassium salt mine is improved, processing utilization resource amount is enlarged, the processing utilization rate of mine resources is effectively improved, the service life of the mine is prolonged, and the economic value of the mine is improved.

Description

1. Technical field [0001] The invention belongs to the technical field of potassium extraction from salt lakes, and in particular relates to a method for removing high insolubles and low-grade solid potassium ore insolubles. 2. Background Technology [0002] Solid potassium ore is one of the main raw materials for the production of potassium chloride fertilizer. There are two main methods for producing potassium chloride with solid potassium ore as raw material: one is to dissolve the solid potassium ore, remove impurities by hot filtration, and cool the filtrate Crystallization to obtain potassium chloride product; the other is flotation method, that is, solid potassium ore is broken, pulped, flotation, and refined to obtain potassium chloride fertilizer. These two methods have certain requirements on the content of insoluble matter in the raw material ore: the production of potassium chloride by hot melting and cold crystallization of solid potassium ore requires generally...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01D3/08C05D1/02
Inventor 马金元边红利呼桂桂张君陶文平夏义忠李海民陈育刚
Owner QINGHAI ZHONGHANG RESOURCE
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