Method for tempering high temperature slag and mineral cotton production method

A production method and technology of slag wool, applied in glass manufacturing equipment, manufacturing tools, etc., can solve the problems of wasting sensible heat and not saving energy, and achieve excellent performance

Inactive Publication Date: 2015-10-21
CHINA JINGBLUE BEIJING ENVIRONMENTAL ENG CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

1 ton of blast furnace slag contains 1675MJ of sensible heat, which is roughly equivalent to the heat released by

Method used

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  • Method for tempering high temperature slag and mineral cotton production method

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Example Embodiment

[0023] Example 1: A company uses silico-manganese furnace slag as raw material, the slag volume is 6t / h, the water consumption of the original slag washing water quenching process is 5t water / t slag, the slag acidity is 2.0, and the content of AL2O3> 20%, viscosity> 3(1400℃), after using this technology, the water consumption of water quenching process is reduced by 5t water / t slag, 100kg dolomite powder / t slag and 40kg SiC powder / t slag are added, the pressure of the modifier is 0.2Mpa, and the powder is sprayed. The speed is controlled at 200Kg / min. When the slag is discharged, the slag is quenched and tempered in the slag tank. The slag temperature is basically maintained at 1400℃. After the quenching and tempering is completed, the slag bag is transported to the slag wool pouring position, and the slag is discharged at the top Stable slag flow pouring, blowing slag wool, after testing, the slag wool fiber diameter is 5um, and the content of slag ball <8%, the thermal conducti...

Example Embodiment

[0024] Example 2: A company uses ferronickel slag as raw material, the slag volume is 5t / h, the water consumption of the original flushing slag water quenching process is 5t water / t slag, the slag acidity is 1.6, and the MgO content> 30%, viscosity> 2(1400℃). After using this technology, the water consumption of the water quenching process is reduced by 5t water / t slag, 200kg fly ash powder / t slag and 30kg AL powder / t slag are added, and the modifier pressure is 0.2Mpa. The powder spraying speed is controlled at 200Kg / min. When the slag is discharged, the slag is quenched and tempered in the slag irrigation. The slag temperature is basically maintained at 1400 ℃. After the quenching and tempering is completed, the slag bag is transported to the slag wool pouring position, and the top The slag discharge is stable and the slag flow is poured, and the slag wool is blown. After testing, the fiber diameter of the slag wool blown out is 4um, and the content of the slag ball <8%, the th...

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Abstract

A method for tempering high temperature slag and a mineral cotton production method belong to the metallurgical technical field of steel, ferronickel, ferromanganese, copper and the like. A tempering process is carried out by spraying coal ash, dolomite, aluminum ash and the like by using a heat-resistant spray gun, and the mixture is heated by using a heating agent in an oxygen blowing manner; moreover, by virtue of a sufficient condition of pouring hot slag into a slag tank in kinetics, the used equipment comprises a powder spraying system and an oxygen supply system. According to the components of the hot slag, a corresponding tempering agent is sprayed into the slag and the heating agents such as aluminum ash and the like are added to be in reaction with oxygen; the tempering agent is prompted to be fully mixed with the slag by virtue of flowability of the hot slag pouring into the slag tank so as to quickly form a silicate system; the heating agents are added, so that the slag temperature is not reduced, and a slag tank cover further covers the tank, so that the heat loss is reduced. Thereofe, the component is tempered into the slag blowing slag wool, the temperature of which is proper, and the viscosity is 1-3Pa.s. The problem that the slag is hardly mixed with the tempering agent and a temperature drop happens is solved. A melting furnace (an electric furnace) is not needed for secondary heating, so that the method has a relatively high economical benefit. The slag tank with a top cover is conveyed to a mineral cotton workshop and a travelling crane conveys the slag tank to a pouring site. Then, the slag tank is overturned by using a winch, and a slag fluid in a fixed quantity is controlled to enter a closed and heated blowing tank from an upper opening of the slag tank. The slag fluid in the fixed quantity enters the closed and heated blowing tank from the upper opening of the slag tank, so that the problem that in production of mineral cotton, the slag fluid amount is unstable as the height of the liquid level of a slag tank is different and the pressure of the liquid level is different in a manner that the melt is discharged from the bottom of the tank and the problem that the bottom-discharged slag blowing tank is blocked as the slag temperature is reduced are solved.

Description

technical field [0001] The patent of the invention belongs to the metallurgical technical field of steel, ferronickel, ferromanganese, copper, etc., and specifically relates to the quenching and tempering of high-temperature furnace slag and the production method of slag wool. Background technique [0002] Slag wool is made of blast furnace, ferronickel, ferromanganese, copper and other metallurgical slag as the main raw material, adding part of the conditioner, after melting, it is made of filamentary inorganic fiber by high-speed centrifugal injection method and other processes. It is mainly divided into three preparation methods: cold blast furnace slag represented by the patent "a kind of slag wool and its production method" (application number 201410696242.9), etc., mixed with silica and other tempering materials, mixed evenly and put into the melting furnace for heating , until the slag wool is blown out by centrifugation; as represented by the patent "A Method of Slag...

Claims

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Application Information

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IPC IPC(8): C03C13/06C03B37/005
Inventor 陈伟赵文广赵建华赵文义其他发明人请求不公开姓名
Owner CHINA JINGBLUE BEIJING ENVIRONMENTAL ENG CO LTD
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