Waste coal, mine slag thermostable baking-free wall, floor and tile

Abstract

The invention relates to a high-temperature non-burned wall, floor or panel brick made of waste coal and slag. The brick mainly comprises the following raw materials: Waste cinder powder: 25 to 35 shares; waste firebrick powder: 15 to 25 shares; calcium aluminate cement: 8 to 12 shares; ceramic fiber: 1.5 to 2.5 shares; water glass: 2.5 to 3.5 shares; and alumine, mullite or emery: 30 to 40 shares. The preparation method comprises the following technique steps: Step one, crush waste cinder and waste firebricks into powder before screening for use; step two, put the waste cinder powder, the waste firebrick powder, the calcium aluminate high-temperature cement, the ceramic fiber and the alumina, mullite or emery into a mixing container, before adding high-temperature adhesive agent water glass and suitable volume of water and mixing them uniformly; step three, put the mixture from step two into moulds to form molded firebrick blanks; step four, let the firebrick blanks in a ventilated place to dry naturally before end products of high-temperature non-burned bricks for walls, floors and panels made of waste coal and slag. The invention has advantages of saving energy, environmental protection, and no oxidation reaction with magnet steel, long service life and being possible to be reused for more than 150 turnaround times.

Description

technical field [0001] The invention relates to a refractory material, in particular to a waste coal and slag high temperature resistant wall, floor and slab brick. It is mainly used as the push plate of the magnetic steel tunnel kiln. It can also be used for the masonry of furnaces such as other kilns and boilers, and can also be used for waste coal and slag high temperature resistant wall, floor and slab bricks. It belongs to the technical field of refractory materials in the magnetic industry. Background technique [0002] The current production of refractory bricks includes raw material crushing, molding, firing and other processes, among which the firing process is the key to the production of refractory bricks, because it not only consumes a lot of fuel, but in actual production, if the process parameters are not well controlled, it will Deformation, cracking, raw burning and over-burning will result in a large amount of waste and defective products, which will great...

AI Technical Summary

Problems solved by technology

[0004] Ordinary refractory bricks: sintered by bauxite or mullite or corundum sand at high temperature (1300-1800°C). On the one hand, firing consumes a lot of energy; on the other hand, refractory bricks after high-temperature sintering are brittle and In the process of handling and transmission, it is prone to brittleness and cracks, so its service life is short, and the number of turnovers is generally about ten times

[0005] Silicon carbide refractory brick: It is sintered from silicon carbide at high temperature (1400°C). On the one hand, it consumes a lot of energy. On the other hand, silicon carbide is easy to oxidize with the sintered magnetic steel permanent magnet, which is easy to oxidize and damage the tunnel kiln. The internal firing atmosphere will affect the firing quality of the magnetic steel. In severe cases, the entire kiln will be damaged and the kiln will be scrapped. Therefore, it is a common problem of refractory materials in the magnetic industry.