CN1168359A

CN1168359A - Sintered gangue brick and its production process

Info

Publication number: CN1168359A
Application number: CN96108306A
Authority: CN
Inventors: 张建高
Original assignee: Individual
Current assignee: Individual
Priority date: 1996-06-16
Filing date: 1996-06-16
Publication date: 1997-12-24

Abstract

The sintered gangue brick is produced through the processes of material selection, crushing, compounding, stirring, feeding, pressing to form and baking, and the material composition includes gangue powder 75-80 weight portions, clay 20-25 weight portions, and water 13-14 weight portions. The present invention has the merits of simple technological process and low cost, and the product is regular, high in strength and light.

Description

A kind of coal gangue baked brick and manufacture method thereof

The present invention relates to a kind of building brick, particularly coal gangue baked brick and manufacture method thereof.

At present, clay brick is ploughed because of its waste, causes that soil erosion, power consumption are big, is of poor qualityly listed in the wall body brick of forbidding, developing by country and is limited.

Coal gangue is non-burning brick then because of need cement and additive, and the cement conservation time is long, floor space is big, cost is high, labour intensity is big and be difficult to accept by people.

The existing solid vitrified brick of coal gangue is with brick extruding machine production adobe, cuts base because of adopting steel wire, do not allow coarse grain in the blank, otherwise steel wire can not normally be cut base, therefore, broken process is had relatively high expectations, and comprises thick glass, thin glass, oven dry, ball milling.Gu oven dry and ball mill cost height, power consumption is big, and floor space is big, complex process, and the corresponding raising of cost is a lot.Moreover, the adobe surface irregularity that cuts out with steel wire, not specification, and the adobe material must soften when water ratio 25% and could normally cut base, cause the excessive and easy deformation of adobe humidity, and need normally to advance the kiln roasting after the oven dry adobe, set up drying system; Adobe moisture focuses in the roasting process and to produce intensive water vapour, therefore to the corresponding raising that requires of kiln, moreover, because of making to shrink, strengthens the moisture height, and cause internal structure loose, intensity reduces, and yield rate is low.

The present invention aims to provide that a kind of technology is simple, cost is low, brick face rule, intensity height, coal gangue baked brick and manufacture method thereof that weight is lighter.

Coal gangue baked brick of the present invention, its manufacturing processed comprise select materials, screening, glass are broken, quantitative ingredient, powerful stirring, storing, dosing, the moulding of pressure brick and roasting.Its batching is colliery powder 75-80 (preferably getting 78) by weight; Clay 20-25 (being preferably 22); Water 13-14 (being preferably 13); Facecloth hole 9-13, its aperture is the 4-12 millimeter, 40 millimeters of hole depths; Finished bricks compressive strength＞80 kilograms per centimeter ², its weight 2.2-2.4 kilogram/piece.

Manufacture method of the present invention is; The coal gangue of the 1300-1700 kilocalorie chosen is met thick glass feed size and sends into crusher to carry out glass broken through being filtered into, it is that 50-60 purpose fine powder is more than 60% that colliery powder after the fragmentation requires, remaining fineness is below 3 millimeters, then that fragmentation is good colliery powder and clay, water are prepared burden, and its proportioning is by weight; Colliery powder 75-80, clay 20-25, water 13-14; After above confected materials sent into machine,massing and stir into grog, put into materials-stored box and store for future use, send into brick pressing machine moulding (and finishing facecloth hole task simultaneously) by constant feeder; Formed green brick extrudes the back less than 10% because of inherent moisture content through brick pressing machine, so formed green brick directly can be put into common wheel kiln baking, roasting is overflow degree and is 1150-1300 ℃, promptly becomes formal product after annular kiln roasting in 24 hours.

The present invention has following advantage;

1, broken segment requires to reduce, and exempts the oven dry and the milling system of existing coal gangue baked brick broken segment, has saved investment, has reduced consumption, has saved the ball mill occupation of land, and changing tunnel furnace is simple wheel kiln baking.

2, can improve the mould of brick pressing machine easily as required, finishing various assortment (comprising solid brick, single face hole brick, hollow brick, passageway brick, floor tile and special shaped brick etc.), and finish the task in cloth hole in adobe simultaneously.As in the solid adobe of coal gangue, finishing cloth hole 9-13, aperture 4-12 millimeter, 40 millimeters of hole depths, just increased the saturating bad temper of colliery wastes brick when roasting, it is sandwich to reduce raw material, improves intensity, reduce weight and raw material, every brick reduces 0.1-0.25 kilogram (this point can't be accomplished) and roasting time shortening on existing coal gangue baked brick technology, production life cycle is corresponding dwindles, and every block cost is saved 0.01-0.02 unit.

Shortcoming when 3, the present invention does not exist steel wire to cut base, there is particle that green brick forming is not had influence slightly, because of brick pressing machine pressure quite big, make the adobe compact internal structure, moisture is extremely low, have only about 10%, need not oven dry and can advance the kiln roasting,, can not produce a large amount of water vapour during roasting because of the adobe water content is little, therefore the requirement to kiln reduces, both can produce with common annular kiln, reduce the cost of putting up a kiln, and loose phenomenon can not occur because of unfired brick structure is much tightr than existing adobe, disconnected brick and loose brick are few, the corresponding raising of yield rate and intensity.

4, the relative coal gangue of the present invention is non-burning brick, has the cycle weak point, and cost is low, lightweight characteristics.

5, the present invention can be widely used in all kinds coal gangue sintering brick product, as passageway brick, floor tile.

Claims

1, a kind of coal gangue baked brick, its manufacturing processed comprise select materials, screen, fragmentation, quantitative ingredient, powerful stirring, storing, dosing, the moulding of pressure brick and roasting, it is characterized in that its batching is by weight: colliery powder 75-80; Clay 20-25; Water 13-14; Facecloth hole 9-13, its aperture is the 4-12 millimeter, 40 millimeters of hole depths; Finished bricks compressive strength＞80 kilograms per centimeter ², its weight 2.2-2.4 kilogram/piece.

2, a kind of coal gangue baked brick according to claim 1 is characterized in that its batching is by weight: coal gangue 78, clay 22, water 13.

3, a kind of manufacture method of coal gangue baked brick, the coal gangue that it is characterized in that the 1300-1700 kilocalorie that will choose is filtered into to meet and is sent into crusher behind the thick glass feed size and carry out fragmentation, colliery powder granularity requirements after the fragmentation is a 50-60 purpose fine powder more than 60%, and remaining fineness is below 3 millimeters; Colliery powder and clay, water that fragmentation is good are prepared burden, and its proportioning is by weight: colliery powder 75-80, clay 20-25; Water 13-14; Above confected materials is sent into machine,massing stir into and put into materials-stored box behind the grog and store for future use, send into brick pressing machine moulding (and finishing facecloth hole task simultaneously) by constant feeder; Formed green brick is directly put into common wheel kiln baking, and maturing temperature is 1150-1300 ℃, roasting time 24 hours.