CN102863246B - Light refractory attapulgite volcaniclastic-rock aggregate sand - Google Patents
Light refractory attapulgite volcaniclastic-rock aggregate sand Download PDFInfo
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- CN102863246B CN102863246B CN201210373205.5A CN201210373205A CN102863246B CN 102863246 B CN102863246 B CN 102863246B CN 201210373205 A CN201210373205 A CN 201210373205A CN 102863246 B CN102863246 B CN 102863246B
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Abstract
The invention discloses light refractory attapulgite volcaniclastic-rock aggregate sand. The light refractory attapulgite volcaniclastic-rock aggregate sand in the technical scheme is mainly characterized by comprising highly-viscous attapulgite clay powder, attapulgite clay tailings, volcaniclastic rock mixture, diatomite tailings, expanded vermiculite, coal gangue, bentonite tailings and plant straw powder. A finished product of the light refractory attapulgite volcaniclastic-rock aggregate sand is obtained by uniformly stirring the ingredients, crushing, soaking, extruding, roasting, crushing, screening and packaging. The light refractory attapulgite volcaniclastic-rock aggregate sand has the advantages of high porosity, low volume density, small volume shrinkage at the high temperature and low thermal conductivity. The light refractory attapulgite volcaniclastic-rock aggregate sand is made of a great quantity of various wastes, so that resource utilization rate is increased beneficially, the wastes turn into wealth, land occupation can be reduced, environmental protection and purification are achieved, energy is saved, and production cost is lowered. The light refractory attapulgite volcaniclastic-rock aggregate sand is applicable to light refractory concrete engineering.
Description
Technical field
The present invention relates to refractory material, be specifically related to a kind of concave convex rod pyroclastic rock light-weight refractory aggregate sand.
Background technology
Lightweight refracrory is the refractory material that a kind of porosity is high, bulk density is little, thermal conductivity is low, is used as heat-barrier material in Industrial Stoves and other Thermal Equipments; With general refractory brick comparison, lightweight refracrory resistance performance of slag corrosion, mechanical strength, mar proof are poor, and high temperature lower volume is shunk larger.
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.
Concave-convex clay rod, except containing attapulgite, often contains the mineral such as bentonite, kaolinite, hydromica, sepiolite, quartz, opal and carbonate.
With the pyroclastic rock that also has of Concave-convex clay rod ore deposit symbiosis, pyroclastic rock is mostly on the upper strata in Concave-convex clay rod ore deposit, the pyroclastic rock ore bed on upper strata, some Concave-convex clay rods mining area
'sthickness is up to tens of rice, at Concave-convex clay rod in recovery process, the pyroclastic rock on upper strata, Concave-convex clay rod mining area is abandoned as discarded object, according to on-the-spot investigation, and 1 ton of Concave-convex clay rod of every exploitation, the pyroclastic rock producing has more than 30 tons, by the output of producing 150000 tons per year, calculate, the pyroclastic rock of generation, up to 4,500,000 tons, all can be utilized for many years, whole mining area is the pyroclastic rock mixture of again piling up everywhere, causes the serious wasting of resources and economic loss.
Gangue is thrown aside, takies tract, and sulfide in gangue is overflowed or leached can atmosphere pollution, farmland and water body, and hillock also can spontaneous combustion breaking out of fire, or in avalanche in rainy season, silts river up and cause disaster.
Summary of the invention
The object of the invention is to overcome weak point in prior art, a kind of concave convex rod pyroclastic rock light-weight refractory aggregate sand is provided.
Concave convex rod pyroclastic rock light-weight refractory aggregate sand is comprised of the sticky Concave-convex clay rod powder of height, Concave-convex clay rod mine tailing, pyroclastic rock mixture, diatomite mine tailing, expanded vermiculite, gangue, bentonite mine tailing and plant stalk powder.
The production method of concave convex rod pyroclastic rock light-weight refractory aggregate sand: the finished product that the batching of concave convex rod pyroclastic rock light-weight refractory aggregate sand is stirred and pulverize, soak, be packaged as concave convex rod pyroclastic rock light-weight refractory aggregate sand after extruding, roasting, pulverizing and screening.
Concave-convex clay rod be a kind of layer of chain structure containing Shuifu County's zeopan clay mineral, Concave-convex clay rod soil property is fine and smooth, water imbibition is strong, tool viscosity and plasticity when wet, be conducive to the bonding between raw material, can improve granule strength and the porosity of concave convex rod pyroclastic rock light-weight refractory aggregate sand.
High sticky Concave-convex clay rod powder refers to gets 28.0g Concave-convex clay rod 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 stirred sample suspension again the viscosity of using NDJ-1 type rotation viscometer to test its suspension, tested viscosity value>=2200 into
mPasconcave-convex clay rod powder be high sticky Concave-convex clay rod powder, the present invention selects grain fineness≤0.074 millimeter of high sticky Concave-convex clay rod powder.
Concave-convex clay rod can mix in recovery process a certain amount of rubble and earth, as a kind of Concave-convex clay rod mine tailing, abandons, and causes a large amount of wastings of resources, and the present invention selects grain fineness≤2.0 millimeter of Concave-convex clay rod mine tailing.
Pyroclastic rock is the rock of the transitional type between magma lava and sedimentary rock, the material that wherein more than 50% composition is sprayed by pyroclastic flow forms, and these tephres are mainly the lava of premature coagulation on volcano, the rock formation that passage is around burst when volcanic eruption.Pyroclastic rock mixture comprises landwaste, brilliant bits, nature of glass bits, slurry bits, volcanic block (diameter is greater than 100 millimeters), volcanic pisolite (diameter is greater than 2 millimeters) and volcanic ash (diameter is less than 2 millimeters), pyroclastic rock main chemical compositions is silica and aluminium oxide, the intensity with good fire resistance and increase concave convex rod pyroclastic rock light-weight refractory aggregate sand, the present invention selects grain fineness≤5.0 millimeter of pyroclastic rock mixture.
Diatomite is fine and smooth, loose, light weight, porous, specific area is large, space is regular distribution, and stable chemical nature is a kind of natural nano aperture amorphous silicon material, but diatomite is made a low multiple use, the product of most enterprises comes from one-level soil, and two, three grades of soil are discarded in a large number, have caused serious waste of resources, also polluted environment, the present invention selects grain fineness≤2.0 millimeter of diatomite mine tailing.
Fabric and raw-vermiculite sheet is after high-temperature roasting, and its volume energy expands rapidly several times to tens times, and the vermiculite after volumetric expansion is just expanded vermiculite, has very strong thermal and insulating performance, and the present invention selects grain fineness≤2.0 millimeter of expanded vermiculite.
Gangue is the solid waste discharging in coal mining process and coal washing process, there is low heating value, carbon containing 20～30%, the present invention uses gangue can save part coal, increase the content of aluminium oxide, the intensity that improves concave convex rod pyroclastic rock light-weight refractory aggregate sand, the present invention selects grain fineness≤2.0 millimeter of gangue.
The rock that bentonite is mainly comprised of bentonite, it is the important raw mineral materials of field of metallurgy, the bentonite mine tailing that the present invention selects is distributed in the lower floor in Concave-convex clay rod ore deposit mostly, be difficult to carry out independent exploitation, but content >=16% of aluminium oxide in bentonite mine tailing, and thering is plasticity and cohesiveness, the present invention selects grain fineness≤2.0 millimeter of bentonite mine tailing.
Plant stalk powder refers to the powder after the straw crushings such as straw, wheat straw, corn, after plant straw pruinescence burnouts, can make concave convex rod pyroclastic rock light-weight refractory aggregate sand have the higher porosity, the present invention selects grain fineness≤0.5 millimeter of plant stalk powder.
The present invention is achieved by following technical proposals:
1, the batching of concave convex rod pyroclastic rock light-weight refractory aggregate sand is comprised of following component by weight percentage: high sticky Concave-convex clay rod powder 2～15%, Concave-convex clay rod mine tailing 5～25%, pyroclastic rock mixture 15～30%, diatomite mine tailing 5～25%, expanded vermiculite 2～20%, gangue 2～15% bentonite mine tailings 2～15% and plant stalk powder 1～10%;
The production method of described concave convex rod pyroclastic rock light-weight refractory aggregate sand: (1) the batching of concave convex rod pyroclastic rock light-weight refractory aggregate sand is added in the two shaft pugmill mixer having moved and stirred, after stirring, inputting pulverizing in pulverizer is the mixture of concave convex rod pyroclastic rock light-weight refractory aggregate sand, grain fineness≤0.5 millimeter of concave convex rod pyroclastic rock light-weight refractory aggregate sand mixture; (2) will in concave convex rod pyroclastic rock light-weight refractory aggregate sand mixture input fermentation vat, soak, soak time is controlled at 24～72 hours; (3) by extruding in the concave convex rod pyroclastic rock light-weight refractory aggregate sand mixture input pair roller extruder after soaking, be tablet, thickness≤3.0 millimeter of tablet; (4) by concave convex rod pyroclastic rock light-weight refractory aggregate sand tablet input swinging roasting roasting in kilns, sintering temperature is controlled at 650～850 ℃; (5) cooled concave convex rod pyroclastic rock light-weight refractory aggregate sand tablet is pulverized and screening, concave convex rod pyroclastic rock light-weight refractory aggregate sand grain fineness≤1.0 millimeter after screening, are packaged as the finished product of concave convex rod pyroclastic rock light-weight refractory aggregate sand;
Described batching when soaking in concave convex rod pyroclastic rock light-weight refractory aggregate sand mixture input fermentation vat, is comprised of following component: concave convex rod pyroclastic rock light-weight refractory aggregate sand mixture 55～80% and water 20～45% by weight percentage.
Concave convex rod pyroclastic rock light-weight refractory aggregate sand has advantages of that the porosity is high, bulk density is little, high temperature lower volume is shunk less and thermal conductivity is low.
In the batching of concave convex rod pyroclastic rock light-weight refractory aggregate sand, the various discarded objects 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.
Concave convex rod pyroclastic rock light-weight refractory aggregate sand is applicable to light weight fire resisting concrete engineering.
The specific embodiment
Below in conjunction with embodiment, the invention will be further described:
1, the batching of concave convex rod pyroclastic rock light-weight refractory aggregate sand is comprised of following component by weight percentage: high sticky Concave-convex clay rod powder 8%, Concave-convex clay rod mine tailing 16%, pyroclastic rock mixture 26%, diatomite mine tailing 22%, expanded vermiculite 12%, gangue 8%, bentonite mine tailing 6% and plant stalk powder 2%;
The production method of described concave convex rod pyroclastic rock light-weight refractory aggregate sand: (1) the batching of concave convex rod pyroclastic rock light-weight refractory aggregate sand is added in the two shaft pugmill mixer having moved and stirred, after stirring, inputting pulverizing in pulverizer is the mixture of concave convex rod pyroclastic rock light-weight refractory aggregate sand, grain fineness≤0.5 millimeter of concave convex rod pyroclastic rock light-weight refractory aggregate sand mixture; (2) will in concave convex rod pyroclastic rock light-weight refractory aggregate sand mixture input fermentation vat, soak, soak time is controlled at 36 hours; (3) by extruding in the concave convex rod pyroclastic rock light-weight refractory aggregate sand mixture input pair roller extruder after soaking, be tablet, thickness≤3.0 millimeter of tablet; (4) by concave convex rod pyroclastic rock light-weight refractory aggregate sand tablet input swinging roasting roasting in kilns, sintering temperature is controlled at 700～800 ℃; (5) cooled concave convex rod pyroclastic rock light-weight refractory aggregate sand tablet is pulverized and screening, concave convex rod pyroclastic rock light-weight refractory aggregate sand grain fineness≤1.0 millimeter after screening, are packaged as the finished product of concave convex rod pyroclastic rock light-weight refractory aggregate sand;
Described batching when soaking in concave convex rod pyroclastic rock light-weight refractory aggregate sand mixture input fermentation vat, is comprised of following component: concave convex rod pyroclastic rock light-weight refractory aggregate sand mixture 68% and water 32% by weight percentage.
Claims (1)
1. a concave convex rod pyroclastic rock light-weight refractory aggregate sand, it is characterized in that, the batching of concave convex rod pyroclastic rock light-weight refractory aggregate sand is comprised of following component by weight percentage: high sticky Concave-convex clay rod powder 2～15%, Concave-convex clay rod mine tailing 5～25%, pyroclastic rock mixture 15～30%, diatomite mine tailing 5～25%, expanded vermiculite 2～20%, gangue 2～15%, bentonite mine tailing 2～15% and plant stalk powder 1～10%;
The production method of described concave convex rod pyroclastic rock light-weight refractory aggregate sand: (1) the batching of concave convex rod pyroclastic rock light-weight refractory aggregate sand is added in the two shaft pugmill mixer having moved and stirred, after stirring, inputting pulverizing in pulverizer is the mixture of concave convex rod pyroclastic rock light-weight refractory aggregate sand, grain fineness≤0.5 millimeter of concave convex rod pyroclastic rock light-weight refractory aggregate sand mixture; (2) will in concave convex rod pyroclastic rock light-weight refractory aggregate sand mixture input fermentation vat, soak, soak time is controlled at 24～72 hours; (3) by extruding in the concave convex rod pyroclastic rock light-weight refractory aggregate sand mixture input pair roller extruder after soaking, be tablet, thickness≤3.0 millimeter of tablet; (4) by concave convex rod pyroclastic rock light-weight refractory aggregate sand tablet input swinging roasting roasting in kilns, sintering temperature is controlled at 650～850 ℃; (5) cooled concave convex rod pyroclastic rock light-weight refractory aggregate sand tablet is pulverized and screening, concave convex rod pyroclastic rock light-weight refractory aggregate sand grain fineness≤1.0 millimeter after screening, are packaged as the finished product of concave convex rod pyroclastic rock light-weight refractory aggregate sand;
Described batching when soaking in concave convex rod pyroclastic rock light-weight refractory aggregate sand mixture input fermentation vat, is comprised of following component: concave convex rod pyroclastic rock light-weight refractory aggregate sand mixture 55～80% and water 20～45% by weight percentage;
The sticky Concave-convex clay rod powder of described height refers to gets 28.0g Concave-convex clay rod 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 stirred sample suspension again the viscosity of using NDJ-1 type rotation viscometer to test its suspension, tested viscosity value>=2200 into
mPasconcave-convex clay rod powder, select grain fineness≤0.074 millimeter of high sticky Concave-convex clay rod powder.
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Owner name: NANTONG ZHONG'AO VEHICLES NEW MATERIALS CO., LTD. Free format text: FORMER OWNER: XU QINGHUA Effective date: 20141029 |
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Effective date of registration: 20141029 Address after: Tongzhou District four stone river highway 226300 in Jiangsu city of Nantong province No. 168 Patentee after: Nantong Zhong'ao Vehicles New Materials Co., Ltd. Address before: 211700 Huaian City, Jiangsu province Xuyi County Xu town of Stonebridge Road No. 40 Patentee before: Xu Qinghua |