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Beneficiation method for separating potassium feldspar concentrates from BayanObo potassium-rich slates

A technology of potassium-rich slate and mineral processing methods, applied in chemical instruments and methods, flotation, solid separation, etc., to achieve the effect of high recovery, high purity and recovery

Inactive Publication Date: 2013-08-28
INNER MONGOLIA UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

There is no report on the beneficiation and separation of Baiyan Obo potassium-rich slate

Method used

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  • Beneficiation method for separating potassium feldspar concentrates from BayanObo potassium-rich slates

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] The mass percentage of mineral composition of Baiyan Obo potassium-rich slate mainly includes: potassium feldspar 65.20, plagioclase 3.10, magnetite 5.10, hematite 1.40, pyrite 1.85, quartz 4.55, carbonate 1.90, Fluorite 1.80, black stone mother 5.0, barite 1.60, apatite 1.20, others 7.30; the main chemical composition percentage of Baiyunebo potassium-rich slate includes: K 2 O10.20, Al 2 o 3 18.10, SiO 2 53.10, TFe 6.50, others 12.10.

[0022] The preparation method is as follows:

[0023] 1) The raw ore is crushed and ground first, and the particle size is -200 mesh and greater than 90%.

[0024] 2) Go through weak magnetic separation first. The magnetic field strength is 0.15T during roughing, 0.1T during beneficiation, and 0.1T during sweeping. The middle ore obtained in beneficiation and sweeping returns to the previous step. Due to the beneficiation and sweeping, the obtained The purity of the iron concentrate is TFe63.10%, the recovery rate is more than 90...

Embodiment 2

[0028] The main mineral components of Baiyan Obo potassium-rich slate are as follows: potassium feldspar 67.70, plagioclase 3.42, magnetite 4.85, hematite 1.55, pyrite 1.17, quartz 5.80, carbonate 1.46, fluorite Stone 1.64, black stone mother 5.60, barite 0.60, apatite 1.73, other 4.48; the percentage of chemical composition is as follows: K 2 O 11.37, Al 2 o 3 20.90, SiO 2 51.09, TFe 6.43.

[0029] 1) The raw ore is crushed and ground first, and the particle size is -200 mesh and greater than 90%.

[0030] 2) Go through weak magnetic separation first. The magnetic field strength is 0.26T during roughing, 0.12T during beneficiation, and 0.12T during sweeping. The middle ore obtained in beneficiation and sweeping returns to the previous step. Due to the beneficiation and sweeping, the obtained The purity of the iron concentrate is TFe65.25%, the recovery rate is ≥95%, and the yield is 4.9%.

[0031] 3) The tailings after magnetic separation of iron are then subjected to f...

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Abstract

The invention relates to a beneficiation method for separating potassium feldspar concentrates from BayanObo potassium-rich slates, belonging to the field of beneficiation. The potassium feldspar concentrates with potassium feldspar purity of not less than 95% and recovery rate of not less than 90% are prepared by using a beneficiation method of combining fractionation magnetic separation and fractionation flotation from potassium-rich slates with potassium feldspar content of 60-70% so that potassium and aluminum are better recycled from the potassium-rich slates. According to the invention,waste materials are recycled, the characteristic that a great quantity of potassium-rich slates are stored in BayanObo in Baotou is utilized, the potassium-rich slates are potassium feldspar mineralsrich in potassium, aluminum and other elements, but the potassium-rich slates are not better developed and utilized.

Description

technical field [0001] The invention relates to a beneficiation method for separating potassium feldspar concentrate from Baiyun Obo potassium-rich slate, and belongs to the technical field of beneficiation technology. Background technique [0002] my country is a large agricultural country, with a grain output of more than 500 million tons, and more than 1 / 3 of the grain output is obtained by fertilization. There has been a serious imbalance in the ratio of nitrogen, phosphorus, and potassium fertilizers in my country's agriculture for a long time. The ratio of nitrogen: phosphorus: potassium is only The ratio is 1:0.36:0.06, far lower than the world average ratio of 1:0.45:0.30. my country's water-soluble potassium salt is in short supply, and its reserves do not exceed 250 million tons. However, the resources of insoluble potassium salt mines are very rich, with huge reserves exceeding 10 billion tons, and its K 2 The O content is generally 10-14%. [0003] The Baiyan Ob...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B03B7/00B03D1/02B03D1/018B03D101/02B03D101/04B03D101/06B03D103/10
Inventor 李梅柳召刚胡艳宏王觅堂高凯张栋梁张永强
Owner INNER MONGOLIA UNIV OF SCI & TECH