Background technology
Novel wall material mainly refers to the material of construction take non-clay resources such as sandstone, shale, industrial solid waste residue, the remaining soil of building as the starting material mechanization production; have protection soil, protection of the environment, save energy, utilize refuse, gain in strength and the characteristic such as economic and practical; shale brick is compared with clay solid brick; sharpest edges are that its production does not damage the arable land and energy consumption is lower, meet national technical development policy.
Shale is to be pushed in earth movement and the rock that forms by clay, have laminated or laminar bedding, impact easy splinter with hard thing, shale does not have viscosity, and plasticity-and water-permeable are all very poor, block shale need to be pulverized and just can be processed into shale building block after very thin, otherwise dried shale green bricks crackle is many, and can produce explosion in sintering process, fraction defective is higher, has increased production cost.
Mineral Resources in China 80% is intergrowth mineral, and a large amount of valuable resources retain among the mine tailing, and tailings impoundment need to take a large amount of soils.A lot of Tailings Dams exceed the time limit or excess load is used, even violation operation, make Tailings Dam have great potential safety hazard, and people's property and the life security of surrounding area caused serious threat.
Attapulgite clay often contains the mineral such as montmorillonite, kaolinite, hydromica, sepiolite, quartz, opal and carbonate except containing attapulgite.
The volcanoclastic rock that also has with the symbiosis of attapulgite clay ore deposit, volcanoclastic rock is mostly on the upper strata in attapulgite clay ore deposit, the thickness of the volcanoclastic rock ore bed on the upper strata, attapulgite clay mining area that has is up to tens of rice, attapulgite clay is in recovery process, the volcanoclastic rock on upper strata, attapulgite clay mining area is abandoned as waste, investigate factually, the volcanoclastic rock that 1 ton of attapulgite clay of every exploitation produces has more than 30 tons, calculate by the output of producing 150000 tons per year, the volcanoclastic rock that produces is up to 4,500,000 tons, all can not obtain for many years utilizing, whole mining area is the volcanoclastic rock mixture of again piling up everywhere, causes the serious wasting of resources and financial loss.
Summary of the invention
The objective of the invention is to overcome weak point in the prior art, provide a kind of Attapulgite shale fire-resistant sintering heat-reserving brick.
The batching of the fire-resistant sintering heat-reserving brick of Attapulgite shale is comprised of the sticking attapulgite clay powder of height, attapulgite clay mine tailing, shale powder, alumine powder, volcanoclastic rock mixture, wilkinite mine tailing, diatomite mine tailing and straw powder.
The production method of the fire-resistant sintering heat-reserving brick of Attapulgite shale: be transported in the Double-stage vacuum brick making machine after the batching of the fire-resistant sintering heat-reserving brick of Attapulgite shale stirred, behind extrusion under vacuum, cut the work in-process that base is the fire-resistant sintering heat-reserving brick of Attapulgite shale, be transported to the finished product that tunnel kiln sintering becomes the fire-resistant sintering heat-reserving brick of Attapulgite shale after naturally drying.
Attapulgite clay be a kind of layer of chain-like structure contain Shuifu County's zeopan clay mineral, the attapulgite clay soil property is fine and smooth, and water-absorbent is strong, tool viscosity and plasticity-when wet, be conducive to the bonding between the raw material, can improve intensity and the porosity of the fire-resistant sintering heat-reserving brick of Attapulgite shale.
High sticking attapulgite clay powder refers to get 28.0g attapulgite clay powder sample, add in the suspension cup of homogenizer, add again 372g water, the suspension cup is placed on the homogenizer, under 11000 rev/mins rotating speed, stirred 20 minutes, to pour in the beaker of 250ml through the high-speed stirring sample suspension again the viscosity of using NDJ-1 type rotational viscosimeter to test its suspension, tested viscosity value 〉=2200 into
MPasThe attapulgite clay powder be high sticking attapulgite clay powder, the height that the present invention selects glues attapulgite clay powder particles fineness≤0.074 millimeter.
Attapulgite clay can mix in recovery process a certain amount of rubble and earth, can't sieve, and abandons as a kind of mine tailing, causes a large amount of wastings of resources, and the present invention selects the attapulgite clay mine tailing after the pulverizing, particle fineness≤0.105 millimeter.
Shale is a kind of sedimentogeneous rock, and complicated component, but the joint that all has thin laminated or thin slice stratiform mainly are the rocks that is formed through pressure and temperature by the clay deposition, but wherein mix chip and other chemical substances that quartz, feldspar are arranged.According to the composition of its tramp material, can be divided into: calcareous shale, irony shale, siliceous shale, carbonaceous shale, black shale, oil shale etc.The present invention selects the shale powder after the pulverizing, particle fineness≤0.105 millimeter.
The alumine essential mineral is comprised of diaspore and high alumina silica, the content of aluminum oxide 〉=50%, and the present invention selects the alumine powder after the pulverizing, particle fineness≤0.105 millimeter.
Volcanoclastic rock is the rock of the transitional type between magma lava and sedimentogeneous rock, wherein the composition more than 50% is comprised of the material of pyroclastic flow ejection, and these tephras mainly are the lava of premature coagulation on the volcano, the rock formation that passage is burst when volcanic eruption on every side.The volcanoclastic rock mixture comprises landwaste, brilliant bits, glassiness bits, slurry bits, volcanic block, volcanic gravel and volcanic ash, volcanoclastic rock can increase the intensity of the fire-resistant sintering heat-reserving brick of Attapulgite shale, the present invention selects the volcanoclastic rock mixture after the pulverizing, particle fineness≤0.15 millimeter.
Wilkinite has plasticity-and agglutinating value(of coal), and the wilkinite mine tailing that the present invention selects is distributed in the lower floor in attapulgite clay ore deposit mostly, is difficult to carry out independent exploitation, quality is also relatively poor, major part is abandoned in the mine tailing district, and the present invention selects the wilkinite mine tailing after the pulverizing, particle fineness≤0.105 millimeter.
Diatomite is fine and smooth, loose, light weight, porous, specific surface area is large, and the space is regular distribution, stable chemical nature, it is a kind of natural nano aperture amorphous silicon material, but diatomite is made a low multiple use, and most products come from one-level soil, and two, three grades of soil are discarded in a large number, caused serious waste of resources, also polluted environment, the present invention selects the diatomite mine tailing after the pulverizing, particle fineness≤0.105 millimeter.
Stalk is the general name of ripe farm crop cauline leaf (fringe) part, is often referred to wheat, paddy rice, corn, potato class, oil plant, cotton, sugarcane and other farm crop remainder behind the results seed.It is in order to increase the porosity of the fire-resistant sintering heat-reserving brick of Attapulgite shale that the present invention adopts straw powder, the fire-resistant sintering heat-reserving brick of Attapulgite shale is in roasting process, straw burning in the insulation blocks is ashes, form a large amount of micropores, the present invention selects the straw powder after the pulverizing, particle fineness≤1.0 millimeter.
The present invention is achieved by following technical proposals:
1, the batching of the fire-resistant sintering heat-reserving brick of Attapulgite shale is comprised of following component by weight percentage: high sticking attapulgite clay powder 2~15%, attapulgite clay mine tailing 5~25%, shale powder 10~30%, alumine powder 5~25%, volcanoclastic rock mixture 2~15%, wilkinite mine tailing 2~15%, diatomite mine tailing 2~10%, straw powder 1~10% and water 5~35%;
The production method of the fire-resistant sintering heat-reserving brick of described Attapulgite shale: ⑴ adds the batching of the fire-resistant sintering heat-reserving brick of Attapulgite shale in the two shaft pugmill mixer that has moved and stirs, be transported to after stirring in the Double-stage vacuum brick making machine, behind extrusion under vacuum, cut the work in-process that base is the fire-resistant sintering heat-reserving brick of Attapulgite shale; ⑵ send into work in-process to dry and carry out nature in the room and dry, and is transported to the tunnel roasting in kilns behind half-finished water ratio≤15%; ⑶ be divided into three phases in the roasting process: the fs maturing temperature is controlled at 30~300 ℃, and roasting time is controlled at 2~8 hours; The subordinate phase maturing temperature is controlled at 300~800 ℃, and roasting time is controlled at 2~15 hours; The phase III maturing temperature is controlled at 800~1150 ℃, and roasting time is controlled at 2~10 hours; ⑷ naturally cooling behind the sintering is packaged as the finished product of the fire-resistant sintering heat-reserving brick of Attapulgite shale;
Described half-finished water ratio per-cent is weight ratio.
Be divided into three phases in the fire-resistant sintering heat-reserving brick roasting process of Attapulgite shale, be conducive to slowly improve maturing temperature, prevent that the fire-resistant sintering heat-reserving brick of Attapulgite shale from producing explosion, guarantees the quality of product.
The fire-resistant sintering heat-reserving brick of Attapulgite shale has that intensity is good, the characteristics of heat preservation energy-saving, sound-insulating and heat-insulating and fire protection flame retarding, and quality meets the standard-required of " GB 26538-2011 sintering heat-reserving brick and insulation blocks ".
The various wastes of a large amount of employings not only are conducive to improve resource utilization in the batching of the fire-resistant sintering heat-reserving brick of Attapulgite shale, turn waste into wealth, and can also reduce land occupation, and protection and environment purification are saved the energy, reduce production costs, and increase economic efficiency.
The fire-resistant sintering heat-reserving brick of Attapulgite shale is applicable to the wall construction of fire resistant heat preserving engineering