Method for preparing inorganic fibers by compounding of slag and coal gangue

A technology of inorganic fiber and coal gangue, applied in glass manufacturing equipment, manufacturing tools, etc., can solve the problems of blast furnace slag not being effectively used, harmful gas polluting the environment, wasting water resources, etc. Shen, improve the effect of compactness

Inactive Publication Date: 2018-05-01
MAANSHAN BAOLONG NEW BUILDING MATERIALS
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  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The water quenching treatment of blast furnace slag makes the sensible heat of blast furnace slag not be effectively utilized, and a lot of water resources are wasted; at the same time, H 2 S, SO 2 Harmful gases pollute the environment

Method used

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Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0021] A method for compounding slag and coal gangue to prepare inorganic fibers. Firstly, desulfurization gypsum and CaO are used as activators to conduct chemical / thermal compound excitation treatment on coal gangue and fly ash, and then mixed with blast furnace slag and ground, and subjected to high-temperature melting and centrifugation. , to obtain inorganic fibers.

[0022] The specific surface area of ​​the gangue is 700-800m 2 / kg, the fineness of the fly ash is 0.045mm.

[0023] Specific steps are as follows:

[0024] (1) Active stimulation treatment:

[0025] Add 36 parts of coal gangue, 18 parts of fly ash, 4 parts of CaO and 6 parts of desulfurized gypsum into the planetary ball mill, add an appropriate amount of water and wet mill for 10 minutes at room temperature, and dry the slurry mixture in an oven at 100 °C for 8 hours, then sinter the mixture at a high temperature, place it in a muffle furnace at 700°C for 5 hours, and then cool it to room temperature to...

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Abstract

The invention discloses a method for preparing inorganic fibers by compounding of slag and coal gangue. According to the method provided by the invention, firstly, desulfurization gypsum and CaO are used as activators, the coal gangue and fly ash are subjected to chemical/thermal composite excitation treatment, the coal gangue and the fly ash are excited by heat, so that the structure of glass networks of the coal gangue and the fly ash is destroyed, active SiO2 and Al2O3 are dissolved out, the dissolved-out active SiO2 and Al2O3 and CaO are subjected to a solid phase reaction, a new substancewith hydraulic activity is generated, and the activity of a pozzolanic reaction of the material is improved; and then the active material and blast furnace slag are mixed and ground, melt centrifugation drawing is performed, so that the inorganic fibers are prepared, the slag and other raw materials are introduced in the manner of fibers, the fibers can be uniformly distributed into a hardened slurry, and a grid structure can be formed, so that the problem of bleeding of concrete is improved, the compactness of the hardened slurry is improved, and the compressive strength and durability of the concrete are improved.

Description

technical field [0001] The invention relates to the technical field of building materials, in particular to a method for preparing inorganic fibers by compounding slag and coal gangue. Background technique [0002] At present, blast furnace slag is generally treated by water quenching, and the treated water quenching slag is used to produce cement and concrete; secondly, it is used to produce slag aggregate, and the added value of the product is low. The water quenching treatment of blast furnace slag makes the sensible heat of blast furnace slag not be effectively utilized, and a lot of water resources are wasted; at the same time, H 2 S, SO 2 and other harmful gases pollute the environment. Therefore, it is particularly necessary to explore new methods of blast furnace slag treatment and comprehensive utilization. [0003] Compared with ordinary concrete, high-performance concrete is more prone to bursting at high temperatures. Adding fibers can better solve the high-te...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C03C13/06C03B37/04C04B14/46
CPCC03B37/04C03C13/06C04B14/46
Inventor 晋元龙陈德全
Owner MAANSHAN BAOLONG NEW BUILDING MATERIALS
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