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Processing method for boron mud reutilization

A treatment method, boron mud technology, applied in the field of waste boron mud reuse treatment, can solve the problem of high content of harmful elements, achieve low price, eliminate fluorine pollution, and achieve significant economic benefits

Active Publication Date: 2013-12-11
无锡智慧兴宜信息技术有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a treatment method for boron mud to be used in metallurgical slag-making materials to remove harmful impurities and realize reuse, to solve the problem of high content of harmful elements such as phosphorus and sulfur in boron mud used in metallurgical slag-making, and to improve The amount and scope of application of boron mud

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] a. Raw material processing and roasting

[0025] Using the boron mud produced by a factory in my country as raw material, the composition of the boron mud after drying caustic soda at 200°C for 0.5 hours is analyzed as follows (mass fraction%): B 2 o 3 2.5%, CaO 17.5%, Fe 2 o 3 5%, SiO 2 15%, MgO 38%, Al 2 o 3 8%, P 1.6%, S 0.8%, and the rest are trace acid-insoluble impurities;

[0026] b. Grinding, mixing carbon, mixing

[0027] Grind the roasted boron mud into powder, and pass through conventional crushing and screening to make the particle size 0.075mm, and then carry out carbon blending. The amount of carbon blending is according to the formula: [C]%=0.3×[Fe 2 o 3 ]%+1.0×[P]%+ excess amount calculation, the excess carbon amount is 2%, so the carbon allocation amount is: [C]%=0.3×5%+1.0×1.6%+2%=5.1%;

[0028] c. Using the briquetting method to briquette the carbonized and mixed boron mud powder into briquettes, the particle size of the finished balls is...

Embodiment 2

[0033] a. Raw material processing and roasting

[0034] Using the boron mud produced by a factory in Liaoning, my country, as raw material, the composition of the boron mud after drying caustic soda at 300°C for 1 hour is analyzed as follows (mass fraction%): B 2 o 31.5%, CaO 12.5%, Fe 2 o 3 7%, SiO 2 15%, MgO 48%, Al 2 o 3 9%, P 1.2%, S 0.9%, and the rest are trace acid-insoluble impurities;

[0035] b. Grinding, mixing carbon, mixing

[0036] Grind the calcined boron mud into powder, through conventional crushing and sieving to make the particle size 0.05mm, and then carry out carbon blending. The amount of carbon blending is according to the formula: [C]%=0.3×[Fe 2 o 3 ]%+1.0×[P]%+ excess amount calculation, the excess carbon amount is 3%, so the carbon allocation amount is: [C]%=0.3×7%+1.0×1.2%+3%=6.3%;

[0037] c. Using the briquetting method to briquette the carbonized and mixed boron mud powder into briquettes, the particle size of the finished balls is cont...

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Abstract

The invention relates to the technical field of waste boron mud reutilization, and particularly relates to a processing method for reutilization of boron mud as a metallurgy slag marking material through removing harmful impurities. The processing method is characterized in that a method comprising the steps of drying, carbon blending, pellet formation and reduction roasting is adopted, and hazardous materials including water, phosphorus and sulfur and the like in the boron mud are removed. The processing method provided by the invention reduces phosphorus oxide in the boron mud through carbon blending and roasting, the phosphorus oxide is reduced into phosphorus steam, the boron mud dephosphorization is realized, thus the harmless treatment for boron mud used for steelmaking slag forming is realized, and the phosphorus steam is also used for recovering simple substance phosphorus; and therefore, the processing method provided by the invention realizes the waste boron mud harmless reutilization, and has many technical and economy advantages.

Description

technical field [0001] The invention relates to the technical field of waste boron mud reuse treatment, in particular to a treatment method for boron mud used in metallurgical slagging materials to remove harmful impurities and realize reuse. Background technique [0002] my country is rich in boron resources, with proven reserves exceeding 100 million tons (in B 2 o 3 count), is one of the few boron resource-rich countries in the world; however, most of the boron ores in my country are of low grade, and most of them are mixed ores such as boronite and boronmagnesium iron. After extracting borax by carbon-soda method, a large amount of waste Boron mud (note: according to the current production process, 3-4 tons of boron mud will be produced for every ton of borax produced); the main components of boron mud are MgO, CaO, Fe 2 o 3 , B 2 o 3 etc. Research on the comprehensive utilization of boron mud has also been carried out, such as the use of boron mud to produce boron-m...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C21C7/076
CPCY02P10/20
Inventor 王宏明李桂荣赵玉涛赵钊
Owner 无锡智慧兴宜信息技术有限公司