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A kind of molten salt chlorination extraction method of beryllium ore

A molten salt chlorination and molten salt technology, applied in chemical instruments and methods, aluminum chloride, beryllium compounds, etc., can solve the problems of increased processing costs, long process flow, and high production costs, and achieve high value-added utilization , short process flow, high economical and practical effect

Inactive Publication Date: 2020-12-15
内蒙古扎鲁特旗鲁安矿业有限公司 +3
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the above methods all have the disadvantages of long process flow, large amount of three wastes, and high production cost.
In addition, beryllium is a highly toxic element, and the complicated process increases the treatment cost of the three wastes

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0043] With beryllium grade (BeO) 12.89%, aluminum grade (Al 2 o 3 ) 16.74%, silicon grade (SiO 2 ) 35.67% beryllium concentrate is a raw material, utilizes the processing method of the present invention to carry out the following processing steps:

[0044] (1) Molten salt chlorination reaction: Add 30Kg of solid sodium chloride and 10Kg of potassium chloride to the molten salt chlorination furnace, heat to melt the solid molten salt, then mix 1000g of beryllium ore with 200g of petroleum coke and 100g of graphite and add React in liquid molten salt, feed 2700g of chlorine gas into molten salt at the same time, the temperature of molten salt chlorination reaction is 750~1100 ℃. The overflow generated by the molten salt chlorination reaction is continuously cooled and separated in four stages, and the molten salt in the furnace is discharged regularly to keep the liquid level of the molten salt in the molten salt chlorination furnace stable;

[0045] (2) One-stage cooling and ...

Embodiment 2

[0050] With beryllium grade (BeO) 5.02%, aluminum grade (Al 2 o 3 ) 11.86%, silicon grade (SiO 2 ) 50.43% beryllium concentrate is a raw material, utilizes the processing method of the present invention to carry out the following processing steps:

[0051] (1) Molten salt chlorination reaction: add 40Kg of solid sodium chloride to the molten salt chlorination furnace, heat the solid molten salt to melt, then add 1000g of beryllium ore and 250g of petroleum coke to the liquid molten salt for reaction, and simultaneously Pass 3600g of chlorine gas into the molten salt, and the reaction temperature of molten salt chlorination is 800-1000°C. The overflow generated by the molten salt chlorination reaction is continuously cooled and separated in four stages, and the molten salt in the furnace is discharged regularly to keep the liquid level of the molten salt in the molten salt chlorination furnace stable;

[0052] (2) One-stage cooling and separation: the temperature is controll...

Embodiment 3

[0057] With beryllium grade (BeO) 10.83%, aluminum grade (Al 2 o 3 ) 18.97%, silicon grade (SiO 2 ) 44.64% beryllium concentrate is raw material, utilizes processing method of the present invention, carries out following processing steps:

[0058] (1) Molten salt chlorination reaction: Add 40Kg of solid sodium chloride to the molten salt chlorination furnace, heat to melt the solid molten salt, then mix 1000g of beryllium ore with 300g of petroleum coke and 50g of graphite and add it to the liquid molten salt To react, feed 4500g of chlorine into the molten salt at the same time, and the molten salt chlorination reaction temperature is 900-1200°C. The overflow generated by the molten salt chlorination reaction is continuously cooled and separated in four stages, and the molten salt in the furnace is discharged regularly to keep the liquid level of the molten salt in the molten salt chlorination furnace stable;

[0059] (2) One-stage cooling and separation: the temperature i...

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PUM

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Abstract

The invention provides a beryllium ore molten salt chlorination extraction method. The method comprises: (1) molten salt chlorination reaction: adding an alkali metal chloride as a molten salt into amolten salt chlorination furnace, heating to melt the molten salt, adding beryllium concentrate and a reducing agent into the molten salt and feeding chlorine gas into the molten salt for a molten salt chlorination reaction and (2) stagewise cooling reaction: stepwisely cooling the molten salt chlorination overflow to obtain a chloride containing beryllium chloride. The method realizes separationand recovery of beryllium chloride, aluminum chloride and silicon tetrachloride, realizes the high added value utilization of the associated resources, reduces the discharge of the three wastes, has simple processes and has high economy and practicability.

Description

technical field [0001] The invention relates to the technical field of chlorination metallurgy, in particular to a molten salt chlorination extraction method of beryllium ore. Background technique [0002] Chlorination metallurgy is the use of chlorinating agents (such as Cl 2 , NaCl, CaCl 2 etc.) Roasting ores to convert the metals to be extracted into chlorides, a metallurgical method in preparation for the preparation of pure metals. This method mainly uses the chlorination sequence of different metals and the difference in physical properties such as the melting point and boiling point of the formed chlorides to achieve the separation and purification of different metals. Compared with other compounds of this metal, metal chlorides have the characteristics of low melting point, high volatility, easy to be reduced, easy to dissolve in water and other solvents at room temperature, and the formation of various metal chlorides is difficult and in nature There are clear di...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C01F3/00C01F7/58C01B33/107
CPCC01B33/10721C01F3/00C01F7/58C01P2006/80
Inventor 李梅高凯张栋梁
Owner 内蒙古扎鲁特旗鲁安矿业有限公司