Out-of-furnace process for producing high-silicon manganese silicon

A production process, the technology of the out-of-furnace method, which is applied in the field of high-silicon-manganese-silicon alloy production by shaking ladles, can solve the problems of low grade rate, high power consumption, and high production cost, and achieve stable product quality, simple operation, and high grade rate. Effect

Inactive Publication Date: 2006-08-09
HUNAN FERROALLOY GRP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The disadvantages of this method are: high power consumption, high-quality imported manganese ore with low P content must be used in large quantities, high production costs, difficult control of furnace conditions, large fluctuations in product composition, and low grade rate

Method used

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  • Out-of-furnace process for producing high-silicon manganese silicon

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] Embodiment 1, 600 kilograms of 75% ferrosilicon is crushed and processed into a particle size of 8 mm; 4400 kilograms of manganese slag is taken in a liquid state, its manganese Mn content is 18%, the alkalinity is 1.0, and the storage temperature is 1480 ° C for subsequent use; the above raw materials are poured into the shaker successively In the bag, shake the bag for 15 minutes, calm down for 10 minutes, remove slag, cast, finish and put it into storage.

Embodiment 2

[0017] Example 2, take 700 kg of 65% ferrosilicon and crush it into a particle size of 6mm, 4400 kg of manganese slag in the liquid state, its manganese Mn content is 19%, the alkalinity is 1.2, and the storage temperature is 1500 ° C for later use; the above raw materials are poured into the shaking bag successively Inside, run the shaker for 15 minutes, calm down for 10 minutes, remove slag, cast, finish and put into storage.

Embodiment 3

[0018] Example 3: Take 500 kg of crystalline silicon and crush it into a particle size of 9 mm, 4,400 kg of manganese slag in liquid state, its manganese Mn content is 20%, the alkalinity is 1.2, and the storage temperature is 1510° C. Run the shaker for 12 minutes, calm down for 10 minutes, remove slag, cast, finish and store.

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Abstract

This invention relates to a production method for high SiMnSi by an external furnace method including 1, preparing materials: crusing FeSi powder into the size of 0-10mm, taking Mn slags from a solution with 18-20%Mn and 1.0-1.2 alkali to be put standby under 1480-1510deg.C, 2, inpouring the FeSi and the Mn slags into a waving bag in the proportion of 1:6-9, starting the bag for 9-17 minutes and keeping still for 9-12 minutes then raking up slags to be cast and arranged then to be sent to the storeroom.

Description

technical field [0001] The invention relates to a process for producing high-silicon-manganese-silicon by an out-of-furnace method, in particular to a production process for producing high-silicon-manganese-silicon alloys by shaking ladles using ferrosilicon (crystalline silicon) and liquid medium manganese slag as raw materials. Background technique [0002] High-silicon-manganese-silicon alloy is a traditional ferroalloy product. It has been smelted and produced by carbothermal method in submerged arc furnaces. This process consumes 5000kWh of electricity and produces 1200m of waste gas for every ton of silicon-manganese alloy produced. 3 (Standard state), 110 tons of waste water, and it is difficult to produce C≤0.7% in submerged arc furnaces, which is used to produce high-silicon-manganese-silicon alloys of low-carbon ferromanganese. [0003] As a new energy-saving process, shaking ladle production has been recorded in many ferroalloy literatures, and belongs to a ferroa...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C33/06C22C38/04
Inventor 陈建武彭灵芝谭立宇李涛伍建张明鹏
Owner HUNAN FERROALLOY GRP CO LTD
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