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Method for comprehensively recycling valuable components in paigeite

A boronite and component technology, applied in the direction of boron halide compounds, chemical instruments and methods, boron halides, etc., can solve problems such as large pollution, low utilization rate of magnesium, and impact on the environment, so as to promote comprehensive utilization and realize comprehensive utilization. The effect of utilization and low production cost

Inactive Publication Date: 2018-11-27
HEBEI UNIV OF ENG +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] At present, the production of boron ore mainly comes from sedimentary and metamorphic boron-magnesium ores in Liaoning, but this type of ore only accounts for 8.98% of the total boron reserves in the country. After years of development and utilization, the reserves of boron-magnesium ores are less than 2 million tons. Mineral resources are nearly exhausted. With the development of the national economy, the demand for boron is growing rapidly, and the available boron resources cannot meet the needs of all walks of life.
These three schemes can complete the separation of iron and boron in boron iron ore to a certain extent. The former scheme can achieve better iron and boron recovery and overflow of boron oxide, but the process flow is long and the pollution is large; the latter two schemes The iron and boron separation effect of this scheme is not very good
In addition, the content of magnesium in boron ore is high, which seriously affects the further smelting of boron concentrate after the separation of boron and ferrite, and under the current smelting process conditions, the utilization rate of magnesium is also low, and it is basically discharged in the form of waste. Not only occupying land but also affecting the environment
So far, there is no effective smelting method for simultaneously separating and recovering iron, boron and magnesium in boronite

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0057] Using 1# boronite in a certain place, its chemical composition is TFe:29.23%, Fe 3 o 4 : 26.24%, FeO: 12.87%, B 2 o 3 : 8.03%, MgO: 26.88%, SiO 2 : 12.22%, CaO: 0.35%, other oxides: 13.41%.

[0058] The method for the comprehensive recovery and utilization of valuable components in boron ore comprises the following steps:

[0059] A. Mixing materials: Add mineral powder, low-sulfur coal and calcium oxide into the mixer, the addition of low-sulfur coal is 10% of the total mass of mineral powder, and the addition of calcium oxide is 5% of the total mass of mineral powder. The particle size of mineral powder, low-sulfur coal and calcium oxide is ≤100 mesh, and they are fully mixed.

[0060] B. Reduction of iron oxides: put the mixed powder into a tunnel kiln, heat it to 1200° C. with microwaves, and keep it warm for 0.8 hours to reduce iron oxides to obtain metal sponge iron.

[0061] C. Separation of metal sponge iron: After the reduction, use 1.5T magnetic inductio...

Embodiment 2

[0067] Using 1# boronite in a certain place, its chemical composition is TFe:29.23%, Fe 3 o 4 : 26.24%, FeO: 12.87%, B 2 o 3 : 8.03%, MgO: 26.88%, SiO 2 : 12.22%, CaO: 0.35%, other oxides: 13.41%.

[0068] The method for the comprehensive recovery and utilization of valuable components in boron ore comprises the following steps:

[0069] A. Mixing: Add mineral powder, coke chips, and calcium oxide into the mixer. The amount of coke chips added is 12% of the total mass of mineral powder, and the amount of calcium oxide added is 4% of the total mass of mineral powder. , coke scraps and calcium oxide with a particle size of ≤100 mesh, fully mixed.

[0070] B. Reduction of iron oxides: put the mixed powder into a tunnel kiln, heat it with microwave to 1000°C, and keep it warm for 1 hour to reduce the iron oxides to obtain metal sponge iron.

[0071] C. Separation of metal sponge iron: After the reduction, use 1.2T magnetic induction to separate to obtain metal sponge iron an...

Embodiment 3

[0077] Using 2# boronite in a certain place, its chemical composition is TFe: 26.82%, Fe 3 o 4 : 28.52%, FeO: 6.64%, B 2 o 3 :8.97%, MgO:23.50%, SiO 2 : 18.29%, CaO: 0.72%, other oxides: 13.36%.

[0078] The method for the comprehensive recovery and utilization of valuable components in boron ore comprises the following steps:

[0079] A. Mixing materials: Add mineral powder, low-sulfur coal and calcium oxide into the mixer, the addition of low-sulfur coal is 13% of the total mass of mineral powder, and the addition of calcium oxide is 6% of the total mass of mineral powder. The particle size of mineral powder, low-sulfur coal and calcium oxide is ≤100 mesh, and they are fully mixed.

[0080] B. Reduction of iron oxides: put the mixed powder into a tunnel kiln, heat it with microwave to 1200°C, and keep it warm for 0.5 hours to reduce the iron oxides to obtain metal sponge iron.

[0081] C. Separation of metal sponge iron: After the reduction, use 1.5T magnetic induction...

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Abstract

The invention discloses a method for comprehensively recycling valuable components in paigeite, and belongs to the field of metallurgy. The method adopts microwave heating, tunnel kiln smelting and chloride separation. According to the method, iron, boron and magnesium elements in the paigeite can be effectively separated, the grade and yield of iron and boron can be improved, high-magnesium tailings can be recycled, utilization of the composite paigeite is promoted, the situation of iron mine, boron mine and magnesium mine resource shortage can be effectively relieved, the ecological featureof resource and energy can be taken into consideration, and comprehensive utilization of paigeite resource can be realized. The method has the advantages of simple process, low production cost, energyconservation, emission reduction and the like.

Description

technical field [0001] The invention relates to the comprehensive utilization of metallurgical slag resources, in particular to a method for treating boron ore, belonging to the field of metallurgy. Background technique [0002] At present, the production of boron ore mainly comes from sedimentary and metamorphic boron-magnesium ores in Liaoning, but this type of ore only accounts for 8.98% of the total boron reserves in the country. After years of development and utilization, the reserves of boron-magnesium ores are less than 2 million tons. Mineral resources are nearly exhausted. With the development of the national economy, the demand for boron is growing rapidly, and the available boron resources cannot meet the needs of all walks of life. However, my country is rich in boron-iron ore resources, and the reserve of boron-iron ore in Liaoning alone reaches 280 million tons, of which B 2 o 3 The estimated reserves are 21.84 million tons. Since boronite mainly includes bor...

Claims

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Application Information

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IPC IPC(8): C21B13/00C01B35/06C22B26/22C01B33/107
CPCC01B33/10721C01B35/061C21B13/00C22B26/22Y02P10/20
Inventor 黄伟军刘亚静
Owner HEBEI UNIV OF ENG
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