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Low cost activation technique of boron-rich slag

A process method, boron-rich slag technology, applied in the comprehensive utilization of resources, metallurgy, and chemical industry, can solve the problems of high energy consumption, long slow cooling time, etc., and achieve the effect of low energy consumption, low production cost, and less equipment

Active Publication Date: 2017-02-22
UNIV OF SCI & TECH BEIJING
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this process needs to set up a slow cooling combustion furnace, the slow cooling time is long, and the whole process still consumes a lot of energy

Method used

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  • Low cost activation technique of boron-rich slag
  • Low cost activation technique of boron-rich slag

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] Table 1 shows the chemical composition of the boron-rich slag obtained after reduction and smelting of a boron-iron concentrate. Heat the boron-rich slag to 1400°C, keep it warm for 10 minutes, and then quickly pour the boron-rich slag into water for quenching. After the quenched boron-rich slag was dried, the activity was measured by alkaline hydrolysis at atmospheric pressure. It was found that the activity of the boron-rich slag was only 46.36%, which could not meet the needs of chemical production. The main reason was that the boron-rich slag had not yet started to crystallize.

[0020] Table 1 Main components of boron-rich slag

[0021]

Embodiment 2

[0023] Table 1 shows the chemical composition of the boron-rich slag obtained after reduction and smelting of a boron-iron concentrate. Heat the boron-rich slag to 1400°C and keep it warm for 10 minutes, then quickly pour the boron-rich slag into the slag tank preheated to 1200°C for natural slow cooling until room temperature. The activity of the boron-rich slag was measured by the atmospheric pressure alkaline hydrolysis method. At this time, the activity of the boron-rich slag was 86.46%, which was relatively high and fully met the requirements of boron chemical production. At this time, the boron-rich slag crystallized well, and the Suianite and Xiaotengite phases developed, and the highly active Suianite was the main boron-containing phase.

Embodiment 3

[0025]Table 1 shows the chemical composition of the boron-rich slag obtained after reduction and smelting of a boron-iron concentrate. Heat the boron-rich slag to 1400°C, keep it warm for 10 minutes, then quickly pour the boron-rich slag into the slag tank preheated to 1200°C for natural slow cooling, when the boron-rich slag is slowly cooled to 1100°C, open the slag tank, put The high-temperature solid boron-rich slag is poured into a closed water tank for rapid quenching, and a water vapor recovery device is used to collect the high-temperature water vapor generated during the quenching process. After the quenched boron-rich slag was dried, the activity was determined by alkaline hydrolysis at atmospheric pressure. It was found that the activity of the boron-rich slag was 87.02%, which was the highest activity, which fully met the requirements of boron chemical production. At the same time, the production cycle is shortened, and part of the sensible heat energy is recovered....

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Abstract

The invention discloses a low cost activation technique of boron-rich slag, and belongs to the field of chemical metallurgy and comprehensive utilization of resources. The invention relates to a method of efficiently activation extracting boric oxide through high magnesium boron-rich slag, and is used for development and utilization of resources of paigeite. The method is characterized in that the boron-rich slag obtained after revivification and melt separation through a paigeite pyrogenic process is used as a raw material, the purpose that boric oxide is not revivified during the revivification and melt separation processes is guaranteed, an existential state of a boracic phase in the boron-rich slag is regulated and controlled after temperature control and slow cooling and rapid quenching, so that activity of the boron-rich slag reaches 87%; the activity of the boron-rich slag is improved, leaching efficiency of the boron can be improved, consumption of acid liquor is reduced, leaching time is shortened, leaching of impurity elements is reduced, finally production cost can be lowered, and environment pollution is reduced. The method is simple in technology, short in technological process, high in efficiency, low in energy consumption, free of addition of any chemical auxiliaries, capable of being perfectly connected with an existing pyrogenic process ferroboron separation technology, further capable of recycling partially sensible heat of fusion boron-rich slag, thus having good social and economic benefits.

Description

technical field [0001] The invention belongs to the fields of chemical industry, metallurgy and resource comprehensive utilization, and relates to high-efficiency activation of high-magnesium and boron-rich slag to extract B 2 o 3 The method is used for the development and utilization of boronite. Background technique [0002] Boron products are widely used in hundreds of economic sectors such as chemical industry, medicine, light industry, textile, electronics, metallurgy, ceramics, building materials, national defense and military industry, cutting-edge science, agriculture, etc., and are called "industrial monosodium glutamate". For a long time, my country's boron industry has mainly used boronite ore (commonly known as "white boron ore") in Liaoning area as the main raw material. This kind of ore is easy to mine and process, but it is now close to exhaustion, and the grade of remaining boron ore resources has declined seriously. At the same time, in recent years, with ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B5/00C01B35/12C01B35/10
CPCC01B35/1054C01B35/123C04B5/00
Inventor 王广王静松薛庆国
Owner UNIV OF SCI & TECH BEIJING
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