Background technology
Novel wall material mainly refers to take the material of construction that the non-clay resources such as sandstone, shale, industrial solid waste residue, the remaining soil of building are starting material mechanization production; there is 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 arable land and energy consumption is lower, meet national technical development policy.
Shale is by clay, in earth movement, to be pushed and the rock that forms, there is laminated or laminar bedding, with hard thing, impact easy splinter, shale does not have viscosity, and plasticity-and water-permeable are all very poor, after need to block shale being pulverized very carefully, just can be processed into shale building block, 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 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, and even violation operation, makes Tailings Dam have great potential safety hazard, and people's property and the life security of surrounding area are caused to serious threat.
Attapulgite clay, except containing attapulgite, often contains the mineral such as montmorillonite, kaolinite, hydromica, sepiolite, quartz, opal and carbonate.
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 upper strata, some attapulgite clays mining area 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, according to field trip, the volcanoclastic rock that 1 ton of attapulgite clay of every exploitation produces has more than 30 tons, by the output of producing 150000 tons per year, calculate, the volcanoclastic rock producing is up to 4,500,000 tons, all can be utilized for many years, whole mining area is the volcanoclastic rock mixture of again piling up everywhere, cause the serious wasting of resources and financial loss.
Coal gangue is thrown aside, takies tract, and sulfide in coal gangue is overflowed or leached can atmosphere pollution, farmland and water body, and waste dump also can spontaneous combustion presence of fire, or in avalanche in rainy season, silts river up and cause disaster.
China Patent Publication No.: CN102765961A, open day: on November 07th, 2012, patent name is " a kind of method of utilizing shale to prepare aerating hollow brick ", disclose " a kind of method of utilizing shale to prepare aerating hollow brick; carry out in accordance with the following steps: (1) is by following butt mass parts mixing raw material: granularity 1000-1500 object shale after pulverization process; lime, flyash; (2) by the 85-95% of above-mentioned steps (1) mixing raw material butt quality, add water, the 0.04-0.06% of mixing raw material butt quality adds aluminium scrap powder, the 9-11% of lime quality adds gypsum, the 1-4% peregal of aluminium scrap opaque amount, the 0.1-0.3% trolamine of lime quality etc.; Amount of shale of the present invention is large, energy-conserving and environment-protective, alleviates shale and stores up the place problem that processing brings, simultaneously for hollow brick provides new raw material sources ".
Above-mentioned patent weak point is " by following butt mass parts mixing raw material: granularity 1000-1500 object shale after pulverization process; lime; flyash ", 1000-1500 object particle fineness is equivalent to 0.012~0.009 millimeter, the production cost that is worked into this particle fineness is very high, can not be applicable to the actual production of building materials industry.
Summary of the invention
The object of the invention is to overcome weak point in prior art, provide a kind of Attapulgite shale fire-resistant sintered perforated brick.
The batching of the fire-resistant sintered perforated brick of Attapulgite shale is comprised of the sticky attapulgite clay powder of height, attapulgite clay mine tailing, shale powder, alumine powder, coal gangue, volcanoclastic rock mixture and wilkinite mine tailing.
The production method of the fire-resistant sintered perforated brick of Attapulgite shale: be transported in Double-stage vacuum brick making machine after the batching of the fire-resistant sintered perforated brick of Attapulgite shale is stirred, after extrusion under vacuum, cut the work in-process that base is the fire-resistant sintered perforated brick of Attapulgite shale, after naturally drying, be transported to the finished product that tunnel kiln sintering becomes the fire-resistant sintered perforated brick of Attapulgite shale.
Attapulgite clay be a kind of layer of chain-like structure containing Shuifu County's zeopan clay mineral, 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 raw material, can improve intensity and the porosity of the fire-resistant sintered perforated brick of Attapulgite shale.
High sticky attapulgite clay powder refers to gets 28.0g attapulgite clay powder sample, add in the suspension cup of homogenizer, add again 372g water, suspension cup is placed on homogenizer, under the rotating speed of 11000 revs/min, stir 20 minutes, to pour in the beaker of 250ml through high-speed stirring sample suspension again the viscosity of using NDJ-1 type rotational viscosimeter to test its suspension, tested viscosity value>=2200 into
mPasattapulgite clay powder be high sticky attapulgite clay powder, the sticky attapulgite clay powder particles of high fineness≤0.074 millimeter that the present invention selects.
Attapulgite clay can mix in recovery process a certain amount of rubble and earth, cannot sieve, and as a kind of mine tailing, abandons, and causes a large amount of wastings of resources, and the present invention selects the attapulgite clay mine tailing after pulverizing, particle fineness≤0.105 millimeter.
Shale is a kind of sedimentogeneous rock, complicated component, but all there is the joint of thin laminated or thin slice stratiform, and be mainly the rock being formed through pressure and temperature by clay deposition, but wherein mix, there are the chip of quartz, feldspar and other chemical substances.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 pulverizing, particle fineness≤0.105 millimeter.
Alumine essential mineral is comprised of diaspore and high alumina silica, content >=50% of aluminum oxide, and the present invention selects the alumine powder after pulverizing, particle fineness≤0.105 millimeter.
Coal gangue is the solid waste discharging in coal mining process and coal washing process, the present invention uses coal gangue can save the energy, increases the content of aluminum oxide, improves the intensity of Attapulgite shale sintered perforated brick, the present invention selects the colliery powder after pulverizing, particle fineness≤0.105 millimeter.
Volcanoclastic rock is the rock of the transitional type between magma lava and sedimentogeneous rock, the material that wherein more than 50% composition is sprayed by pyroclastic flow forms, and these tephras are mainly the lava of premature coagulation on volcano, the rock formation that passage is around burst when volcanic eruption.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 sintered perforated brick of Attapulgite shale, the present invention selects the volcanoclastic rock mixture after 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 poor, major part is abandoned in mine tailing district, and the present invention selects the wilkinite mine tailing after pulverizing, particle fineness≤0.105 millimeter.
The present invention is achieved by following technical proposals:
1, the batching of the fire-resistant sintered perforated brick of Attapulgite shale is comprised of following component by weight percentage: high sticky attapulgite clay powder 2~15%, attapulgite clay mine tailing 5~25%, shale powder 10~30%, alumine powder 5~25%, colliery powder 2~15%, volcanoclastic rock mixture 2~15%, wilkinite mine tailing 2~15% and water 5~35%;
The production method of the fire-resistant sintered perforated brick of described Attapulgite shale: (1) the batching of the fire-resistant sintered perforated brick of Attapulgite shale is added in the two shaft pugmill mixer having moved and stirred, after stirring, be transported in Double-stage vacuum brick making machine, after extrusion under vacuum, cut the work in-process that base is the fire-resistant sintered perforated brick of Attapulgite shale; Half-finished hole ratio >=30% of the fire-resistant sintered perforated brick of Attapulgite shale; (2) work in-process are sent into dry and in room, carried out nature and dry, after half-finished water ratio≤15%, be transported to tunnel roasting in kilns; (3) in roasting process, be divided into three phases: first stage maturing temperature is controlled at 30~300 ℃, and roasting time is controlled at 2~8 hours; Subordinate phase maturing temperature is controlled at 300~800 ℃, and roasting time is controlled at 2~15 hours; Phase III maturing temperature is controlled at 800~1150 ℃, and roasting time is controlled at 2~10 hours; (4) naturally cooling after sintering, is packaged as the finished product of the fire-resistant sintered perforated brick of Attapulgite shale;
Described half-finished water ratio per-cent is weight ratio.
In the fire-resistant sintered perforated brick roasting process of Attapulgite shale, be divided into three phases, be conducive to slowly improve maturing temperature, prevent that the fire-resistant sintered perforated brick of Attapulgite shale from producing explosion, guarantees the quality of product.
The features such as the fire-resistant sintered perforated brick of Attapulgite shale has that intensity is high, insulation, heat insulation and sound insulation, quality meets the standard-required of " GB13544-2011 sintered perforated brick and porous building-brick ".
In the batching of the fire-resistant sintered perforated brick of Attapulgite shale, the various wastes of a large amount of employing, are not only conducive to improve resource utilization, 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 sintered perforated brick of Attapulgite shale is applicable to the wall construction of fire resistant heat preserving engineering
.