Method for performing boron and iron separation on paigeite

A boron iron ore and boron iron technology, applied in the fields of metallurgy and boron iron ore processing, to achieve the effect of improving utilization rate, improving efficiency, performance and reducing operation requirements

Active Publication Date: 2014-03-26
JIANGSU PROVINCE METALLURGICAL DESIGN INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] Therefore, the current methods for separating

Method used

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  • Method for performing boron and iron separation on paigeite
  • Method for performing boron and iron separation on paigeite

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0053] Take 2Kg of boronite ore (with particle size below 2mm, main component: B 2 o 3 6.19%, TFe49.72%, FeO17.99%, CaO1.21%, MgO15.88%, SiO 2 6.75%, Al 2 o 3 0.27%, S0.11%, P0.05%), add 0.44Kg semi-coke, 0.18Kg starch and 0.2Kg bentonite, mix well, add 0.3Kg water and continue to mix until uniform, then press the mixture into balls or In the pelletizing process, after the pellets are dried, they are reduced and roasted in a rotary hearth furnace in order to obtain reduced products. Wherein, the reduction roasting temperature is 1350° C., and the reduction roasting time is 30 minutes. Then, the reduced product is put into an electric furnace in a hot state for melting and separation, so as to obtain 1.006Kg of molten iron with a total iron content of 96.86%, and a total iron content of 3.15%, B 2 o 3 0.624Kg of boron-rich slag with a content of 19.24%.

[0054] It can be known by calculation that the recovery rate of boron is as high as 97%.

Embodiment 2

[0056] Take 2Kg of boronite ore (with particle size below 2mm, main component: B 2 o 3 8.20%, TFe40.31%, FeO12.53%, CaO5.87%, MgO19.39%, SiO 2 9.22%, Al 2 o 3 0.96%, S0.08%, P0.052%), add 0.32Kg of anthracite, 0.18Kg of starch and 0.2Kg of bentonite, mix well, add 0.28Kg of water and continue to mix until uniform, and then press the mixture into balls or make Ball treatment, after the pellets are dried, they are reduced and roasted in a rotary hearth furnace in order to obtain reduced products. Wherein, the reduction roasting temperature is 1330° C., and the reduction roasting time is 30 minutes. Then, the reduction product is put into an electric furnace in a hot state for melting and separation, so as to obtain 0.825Kg of molten iron with a total iron content of 94.86%, and a total iron content of 3.09%, B 2 o 3 0.605Kg of rich boron with a content of 25.64%.

[0057] It can be known by calculation that the recovery rate of boron is as high as 94.6%.

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Abstract

The invention discloses a method for performing boron and iron separation on paigeite, and the method comprises the following steps: pelletizing paigeite, a reducing agent and binders into pellets so as to obtain paigeite pellets; reducing and roasting the paigeite pellets in a rotary hearth furnace so as to obtain reduzate; melting and separating the reduzate so as to obtain molten iron and boron-rich slag containing boron trioxide. The boron and iron separation can be effectively performed on the paigeite by utilizing the method. Compared with the prior art, the method has the advantages of low requirements for rotary hearth furnace temperature and furnace bottom, high iron and boron recovery rates, high paigeite utilization ratio, less erosion to equipment, and can be used for obtaining reduced iron with good strength.

Description

technical field [0001] The invention relates to the field of metallurgy, specifically, the invention relates to the field of boronite processing, and more specifically, the invention relates to a method for separating boron and iron from boronite. Background technique [0002] Boron is distributed in the earth's lithosphere, hydrosphere and meteorite circle in a dispersed state, and is one of the most important elements in the earth's crust. Determined by the physical and chemical properties of boron, boron is widely used in chemical industry, medicine, light industry, textile, electronics, metallurgy, building materials, national defense and military industry, cutting-edge science, agriculture and other departments. my country is rich in boron resources, but only one-third of the total boron resources can be mined and used at present. At present, half of the proven boron ore reserves in China are boronite and boron-iron mixed ores, and the rest are salt brine and salt lake...

Claims

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Application Information

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IPC IPC(8): C22B1/24C22B1/02
Inventor 吴道洪王敏曹志成薛逊
Owner JIANGSU PROVINCE METALLURGICAL DESIGN INST
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