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Method for Separating Main Impurity Minerals of Low-grade Boron Ore Using Cyclone Separator

A technology of cyclone separator and main impurities, which is applied in the field of processing and utilization of low-grade boron ore at the bottom of Dachaidan Lake in Qinghai, can solve the problems of high production cost, many side reactions, complex composition, etc., solve technical problems in deep processing, and reduce acid and alkali Consumption, the effect of simplifying deep processing problems

Active Publication Date: 2011-12-21
QINGHAI INST OF SALT LAKES OF CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Dachaidan Lake Boron Mine B 2 o 3 The content is basically lower than 10%, and the grade of some boron ores can reach 13-17%. There are many types of associated ores with high impurity content, especially a large amount of gypsum and carbonates, which are directly used in the processing of boron products, resulting in high production costs, complicated process flow, high costs, low boron yield, and a large amount of waste slag produced by processing , many side reactions, high decomposing agent consumption, and many environmental protection problems brought about in the production process. At the same time, Dachaidan low-grade boron ore has another feature, that is, with the mining of high-grade boron ore and the change of mining location , the composition of boron ore will change greatly, from boron ore mainly composed of hydroborite and sorbite to boron ore mainly composed of pillarite. The boron ore types are different, and their properties are also different. , the requirements for deep processing process conditions are also different, the above reasons limit the processing and utilization of low-grade boron ore

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] Embodiment 1 Utilizes the method for separating the main impurity minerals of low-grade boron ore with a cyclone separator, comprising the following steps:

[0017] (1) will B 2 o 3 Content is 6.97%, gypsum content is 43.23%, carbonate (comprising calcite, bicarbonate) total amount is 13.41% boron ore 3kg pulverizes to 250 μm after, obtains boron ore powder; Boron ore powder and water press 1: The mass ratio of 5 was prepared into a slurry, and soaked for 18 hours to obtain a slurry with a mass concentration of 15%.

[0018] (2) Transfer the slurry into the slurry tank in the cyclone separator, and mix the slurry evenly after stirring.

[0019] (3) Under the condition that the feed inlet pressure of the cyclone separator is 0.1Mpa, the slurry is separated and the pressure of the feed inlet is kept stable during the separation process. flow material, underflow material. The overflow material is B 2 o 3 Boron ore with a content of 5.62%, a total carbonate content of...

Embodiment 2

[0020] Embodiment 2 The method for separating the main impurity minerals of low-grade boron ore using a cyclone separator comprises the following steps:

[0021] (1) will B 2 o 3 Content is 7.82%, gypsum content is 38.02%, carbonate (comprising calcite, bicarbonate) total amount is 23.17% boron ore 3kg is pulverized to 380 μm after, obtains boron ore powder; Boron ore powder and water press 1: The mass ratio of 2 was prepared into a slurry, and soaked for 6 hours to obtain a slurry with a mass concentration of 25%.

[0022] (2) Transfer the slurry into the slurry tank in the cyclone separator, and mix the slurry evenly after stirring.

[0023] (3) Under the condition that the feed inlet pressure of the cyclone separator is 0.06Mpa, the slurry is separated and the pressure of the feed inlet is kept stable during the separation process. flow material, underflow material. The overflow material is B 2 o 3 Boron ore with a content of 6.92%, a total carbonate content of 34.2%,...

Embodiment 3

[0024] Embodiment 3 The method for separating the main impurity minerals of low-grade boron ore using a cyclone separator comprises the following steps:

[0025] (1) will B 2 o 3 Content is 8.40%, gypsum content is 31.27%, carbonate (comprising calcite, bicarbonate) total amount is 16.58% boron ore 3kg is pulverized to 300 μm after, obtains boron ore powder; Boron ore powder and water press 1: The mass ratio of 4 was prepared into a slurry, and soaked for 24 hours to obtain a slurry with a mass concentration of 20%.

[0026] (2) Transfer the slurry into the slurry tank in the cyclone separator, and mix the slurry evenly after stirring.

[0027] (3) Under the condition that the feed inlet pressure of the cyclone separator is 0.25Mpa, the slurry is separated and the pressure of the feed inlet is kept stable during the separation process. flow material, underflow material. The overflow material is B 2 o 3 Boron ore with a content of 6.95%, a total carbonate content of 35.02...

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PUM

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Abstract

The invention relates to a separation method of main impure minerals of a low-grade boron rock by utilizing a cyclone separator. The method comprises the following steps: (1) crushing the boron rock with B2O3 content between 6.10 and 8.95 percent to obtain boron rock powder, preparing slurry from the boron rock powder and water or the boron rock powder and boron-containing mother solution in proportion, immersing to obtain slurry with the mass concentration between 15 and 50 percent; (2) transferring the slurry into a slurry tank in a cyclone separator, and stirring to uniformly mix the slurry; and (3) separating the slurry under a condition that the pressure of the material inlet of the cyclone separator is between 0.06 and 0.3Mpa to obtain an overflow material and an underflow material at an overflow port and an underflow port of the cyclone separator respectively. According to the separation method, primary separation of an acid waste ore and an alkali waste ore associated with the boron rock is realized, so that a manufacturer can produce borax by utilizing an acid waste associated ore as a principle material, and produce boric acid by utilizing an alkali waste associated ore as a principle material, so that the technical problem of further processing of the low-grade boron rock is fundamentally solved.

Description

technical field [0001] The invention relates to the processing and utilization technology of low-grade boron ore at the bottom of Dachaidan Lake in Qinghai in the field of chemical industry, in particular to a method for separating main impurity minerals of low-grade boron ore by using a cyclone separator. Background technique [0002] Boron and its compounds are important inorganic salt products, mainly used as raw materials for glass and ceramics. The characteristics of boron ore resources in my country are: the total reserves are large, and the proven reserves of boron ore are 49.08 million tons, ranking fourth in the world; the distribution range is narrow, and the boron ore that can be used economically is mainly the borate mine in Liaoning and the Qinghai-Tibet Plateau Liquid solid boron ore, boron resources in other areas are small, and the industrial value is low. With decades of large-scale development, the solid boron ore resources in Liaoning, the largest boron-ma...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B03B5/34
Inventor 梁建董亚萍孔凡志杨波彭姣玉李武
Owner QINGHAI INST OF SALT LAKES OF CHINESE ACAD OF SCI