Rock wool and method for producing rock wool by utilization of high-alkali red mud

A technology of red mud and high alkali, which is applied in the field of rock wool processing, can solve the problems of high production cost of rock wool, potential safety hazards, and environmental impact, and achieve the effects of eliminating potential safety hazards, overcoming the decline in stability, and reducing pollution

Active Publication Date: 2015-04-08
山东安格尔环保科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, as a raw material, basalt is a natural mineral resource. The mining and blasting process will have an impact on the environment, and there are safety hazards and high costs, which in turn lead to high production costs of rock wool.

Method used

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  • Rock wool and method for producing rock wool by utilization of high-alkali red mud
  • Rock wool and method for producing rock wool by utilization of high-alkali red mud

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] The red mud, quicklime, silica powder and fly ash with a humidity of 5% are fully mixed in a mass ratio of 45:8:25:8, wherein the acidity coefficient of the mixture of red mud, quicklime, silica powder and fly ash (SiO 2 、Al 2 o 3) / (CaO, MgO) greater than 1.6, while SiO 2 / Al 2 o 3 Greater than 2, CaO / MgO greater than 1. After stirring evenly, use a ball press to press into red mud balls with a diameter of 7-8cm.

[0038] The pressed red mud balls are dried and mixed with massive dolomite and coke, put into the cupola and melted at 1460°C, then use a centrifuge to form fibers, and apply a binder to produce flocculent mineral wool. Then it is made into rock wool products by heat, pressure, curing and cutting.

Embodiment 2

[0040] The red mud, quicklime, silica powder and fly ash with a humidity of 8% are fully mixed at a mass ratio of 60:12:35:14, wherein the acidity coefficient of the mixture of red mud, quicklime, silica powder and fly ash (SiO 2 、Al 2 o 3 ) / (CaO, MgO) greater than 1.6, while SiO 2 / Al 2 o 3 Greater than 2, CaO / MgO greater than 1. After stirring evenly, use a ball press to press into red mud balls with a diameter of 8-9cm.

[0041] The pressed red mud balls are dried and mixed with massive dolomite and coke, put into the cupola and melted at 1450°C, then use a centrifuge to form fibers, and apply a binder to produce flocculent mineral wool. Then it is made into rock wool products by heat, pressure, curing and cutting.

[0042] like figure 1 As shown, put red mud balls, dolomite, and coke into the tipping bucket feeder, and feed them into the cupola through the tipping bucket feeder. The cupola is equipped with cooling towers, water pools, heat exchangers, and high-press...

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Abstract

The invention belongs to the field of rock wool processing and specifically relates to rock wool and a method for producing rock wool by the utilization of high-alkali red mud. The method for producing rock wool by the utilization of high-alkali red mud comprises the following steps: (1) fully mixing red mud, quicklime, ground silica and fly ash, uniformly stirring and pressing by a ball press machine to obtain red mud balls; and (2) airing the pressed red mud balls and uniformly mixing the pressed red mud balls with blocky dolomite and coke, adding the mixture into a cupola furnace and fusing, carrying out fiber forming by the use of a centrifuge, applying a binder to produce flocculent mineral wool, and carrying out post-treatment to prepare the rock wool product. According to the rock wool and the method for producing rock wool by the utilization of high-alkali red mud, refuse reclamation can be realized, the environment is protected, production cost of rock wool can be reduced, and the prepared rock wool has good water resistance.

Description

technical field [0001] The invention belongs to the processing field of rock wool, and in particular relates to rock wool and a method for producing rock wool by utilizing high-alkali red mud. Background technique [0002] Rock wool is an inorganic external wall insulation material. In the past, the share of rock wool materials in the construction market was about 10%, but with the general improvement of the awareness of building safety and fire protection in all walks of life, the demand for rock wool materials in the construction industry has gradually increased. Since 2011, the price of rock wool board has soared from about 42 yuan / square meter to 240 yuan / square meter. [0003] At present, the main raw materials for producing rock wool are basalt, blast furnace slag and dolomite. After the above raw materials are melted at high temperature, they are centrifuged into fibers at high speed by a four-axis centrifuge. At the same time, a certain amount of binder, dustproof ...

Claims

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Application Information

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IPC IPC(8): C03C13/06C03C6/04
CPCC03C13/06
Inventor 刘志学
Owner 山东安格尔环保科技有限公司
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