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Anhydrous stemming for submerged-arc furnace, and preparation method of anhydrous stemming

A technology of waterless taphole mud and submerged arc furnace, which is applied in the field of metallurgical materials, can solve problems such as the failure of waterless taphole mud to achieve the ideal use effect, and achieve the effect of improving the service life of furnace holes, improving production indicators, and increasing service life

Inactive Publication Date: 2018-03-27
方文成
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, most domestic ferroalloy manufacturers have realized the importance of anhydrous taphole mud in the production process. The current anhydrous taphole mud technology is basically derived from the evolution and imitation of blast furnace anhydrous taphole mud. did not achieve the desired effect

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] Anhydrous taphole mud 1 for submerged arc furnace, its components and parts by weight are: 20 parts of pottery clay, 25 parts of discarded refractory bricks, 8 parts of silicon nitride, 20 parts of plant ash, 2 parts of dehydrated coal tar, powder 5 parts of coal ash, 400 parts of metallurgical solid waste. The raw materials are dehydrated before mixing, and after mixing, the materials are discharged and molded, packed and stored in the warehouse, and the sedation time is 24 hours, and the acquired product 1 is obtained.

Embodiment 2

[0022] Anhydrous taphole mud 2 for submerged arc furnace, its components and parts by weight are: 30 parts of pottery clay, 15 parts of discarded refractory bricks, 16 parts of silicon nitride, 15 parts of plant ash, 5 parts of dehydrated coal tar, powder 2 parts of coal ash, 50 parts of metallurgical solid waste. The raw materials are dehydrated before mixing, and after mixing, the materials are discharged and molded, packed and put into storage, and the sedation time is 24 hours, and the acquired product 2 is obtained.

Embodiment 3

[0024] Anhydrous taphole mud 3 for submerged arc furnace, its components and parts by weight are: 25 parts of pottery clay, 20 parts of discarded refractory bricks, 12 parts of silicon nitride, 18 parts of plant ash, 3 parts of dehydrated coal tar, powder 4 parts of coal ash, 42 parts of metallurgical solid waste. The raw materials are dehydrated before mixing, and after mixing, the materials are discharged and molded, packed and stored in the warehouse, and the sedation time is 24 hours, and the obtained product 3 is obtained.

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Abstract

The invention belongs to the technical field of metallurgical materials, and in particular relates to anhydrous stemming for a submerged-arc furnace, and a preparation method of the anhydrous stemming. The anhydrous stemming for the submerged-arc furnace is prepared from the following components in parts by weight: 20-30 parts of refractory adhesive medium powder, 15-25 parts of aggregate, 8-16 parts of silicon nitride, 15-20 parts of a plasticizer, 2-5 parts of an adhesive agent, 2-5 parts of coal ash and 40-50 parts of metallurgical solid waste. The anhydrous stemming for the submerged-arc furnace can greatly increase the service cycle of a single furnace hole and prolong the service life of the single furnace hole. Furthermore, the anhydrous stemming for the submerged-arc furnace can guarantee the long-term smooth operation of the furnace condition, enables the furnace to normally discharge slag and carbon, and can indirectly increase the production indexes.

Description

technical field [0001] The invention belongs to the technical field of metallurgical materials, and in particular relates to an anhydrous taphole mud for a submerged arc furnace and a preparation method thereof. Background technique [0002] In order to make the working state of the furnace eye taphole stable and meet the needs of submerged arc furnace intensified smelting. According to the structural properties (porosity P), thermal properties (thermal expansion ρ), mechanical properties (high temperature compressive strength S, high temperature creep property P), service performance and operation performance of anhydrous gunpowder, our company has carried out related experiments and comparisons. . Many submerged arc furnaces abroad, represented by Switzerland, Germany, and Sweden, use high-quality anhydrous taphole clay with special technology, and use it in combination with a plugging hole machine. [0003] At present, most domestic ferroalloy manufacturers have realize...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B35/66
CPCC04B35/66C04B2235/349C04B2235/3873
Inventor 方文成
Owner 方文成
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