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An automatic gas injection feeding process for an electric melting furnace for producing rock wool

An electric melting furnace and automatic technology, applied in the field of rock wool production, can solve the problems of uneven acidity coefficient of slag, uneven mixing of auxiliary materials and slag, and high labor intensity, so as to reduce labor intensity and production cost and improve product quality , the effect of high degree of automation

Active Publication Date: 2020-07-07
潍坊奥华环保新材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Weigh the weight of the auxiliary materials before adding. If the addition is not complete, the amount of addition is prone to deviation, resulting in unstable acidity coefficient of slag and affecting the quality of cotton.
Two ways of adding, auxiliary materials are easy to accumulate on the surface of slag, melting is more difficult, the mixing of auxiliary materials and slag is uneven, and the acidity coefficient of slag is uneven
In addition, manual addition through the auxiliary material port not only requires more labor and high labor intensity, but also because the temperature of the slag reaches 1350 degrees and the ambient temperature around the electric furnace is high, there are potential safety hazards for the operators during the labor process

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0021] A process for the production of an automatic gas blowing and feeding system for a rock wool electric melting furnace. The specific method and steps are as follows:

[0022] 1. Use air pressure to extract low-density, high-fineness auxiliary materials from the sealed tank, calculate the addition amount of different auxiliary materials, enter the system, and control the automatic quantitative addition of auxiliary materials through the computer;

[0023] 2. After receiving the feeding signal, the pneumatic flap valve on the upper part of the weighing silo and the feeding machine are automatically opened, and the auxiliary materials are conveyed to the weighing silo through the feeding machine, and the weight of the auxiliary materials passes through the four load cells installed at the bottom of the silo Transfer to the operating desk computer, the feeder will automatically stop feeding when the set added weight value is reached, and the pneumatic flapper valve above the weighi...

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PUM

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Abstract

The invention provides an automatic gas injection feeding process for an electric melting furnace for producing rock wool. The weighed acidic oxide is automatically blown and sprayed into an electricmelting furnace for producing rock wool by adopting gas conveying; meanwhile, the molten slag is stirred and fused with the hot molten slag in the smelting furnace, the effects of quick melting and good reaction uniformity are achieved, an electrode is protected through nitrogen conveying, a dust suction hood is installed above the electrode, and the effect of sucking away trace smoke dust throughdust removal negative pressure is achieved.

Description

Technical field [0001] The invention relates to the field of rock wool production, in particular to a process for automatic gas injection and feeding for the production of rock wool electric furnaces. Background technique [0002] Blast furnace slag is currently the largest emission slag in the metallurgical industry. Most blast furnace slag is used to make building materials such as slag cement. Although cement with good adhesion and higher strength can be prepared, its added value is low. At the same time, a large amount of waste heat is not effectively used when blast furnace slag is removed. [0003] Slag wool is a kind of fine cotton filamentary insulation material made from industrial waste-slag through melting, injection and other processes. The production raw material consists of blast furnace slag and a certain amount of regulators, of which blast furnace slag accounts for about 80%- 90%, the acidity coefficient is generally around 0.95, which plays a leading role in the...

Claims

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Application Information

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IPC IPC(8): C03B3/00
CPCC03B3/00Y02P40/50
Inventor 张述钧刘建平
Owner 潍坊奥华环保新材料科技有限公司