CN102875167A - Attapulgite and pyroclastic rock light clinker powder - Google Patents

Abstract

The invention discloses attapulgite and pyroclastic rock light clinker powder. According to the technical scheme, the attapulgite and pyroclastic rock light clinker powder is characterized by comprising attapulgite clay tailing, pyroclastic rock mixture, diatomite tailing, expanded vermiculite, gangue, bentonite tailing, and plant straw powder. The materials of the attapulgite and pyroclastic rock light clinker powder are crushed, soaked, pressed, roasted and pulverized and are packed to obtain the finished attapulgite and pyroclastic rock light clinker powder. The attapulgite and pyroclastic rock light clinker powder is high in porosity, small in volume density, low in high-temperature volume shrinkage and low in heat conductivity. Various wastes are used to make the attapulgite and pyroclastic rock light clinker powder, so that resource utilization rate can be increased, waste is turned into wealth, occupied land can be reduced, environment can be protected and purified, energy resources can be economized, production cost is lowered, and economic benefit is increased. The attapulgite and pyroclastic rock light clinker powder is applicable to refractory insulation works.

Description

Attapulgite volcanoclastic rock lightweight chamotte powder

Technical field

The present invention relates to refractory materials, be specifically related to a kind of Attapulgite volcanoclastic rock lightweight chamotte powder.

Background technology

Lightweight refractory is the refractory materials that a kind of void content is high, volume density is little, thermal conductivity is low, is used as lagging material on Industrial Stoves and other Thermal Equipments; With general refractory brick relatively, lightweight refractory resistance performance of slag corrosion, mechanical strength, wearability are poor, the 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, make Tailings Dam have great potential safety hazard, and people's property and the life security of surrounding area caused to serious threat.

Attapulgite clay, except containing attapulgite, often contains the mineral such as wilkinite, kaolinite, hydromica, sepiolite, quartz, opal and carbonate.

With the volcanoclastic rock that also has of attapulgite clay ore deposit symbiosis, volcanoclastic rock is mostly on the upper strata in attapulgite clay ore deposit, the volcanoclastic rock ore bed on upper strata, some attapulgite clays mining area 'sthickness is up to tens of rice, at attapulgite clay in recovery process, the volcanoclastic rock on upper strata, attapulgite clay mining area is abandoned as waste, investigates factually, 1 ton of attapulgite clay of every exploitation, the volcanoclastic rock produced has more than 30 tons, by the output of producing 150000 tons per year, calculate, the volcanoclastic rock of generation, 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, causes 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 the spontaneous combustion presence of fire, or, in the avalanche in rainy season, silts river up and cause disaster.

Summary of the invention

The objective of the invention is to overcome weak point in prior art, a kind of Attapulgite volcanoclastic rock lightweight chamotte powder is provided.

Attapulgite volcanoclastic rock lightweight chamotte powder is comprised of attapulgite clay mine tailing, volcanoclastic rock mixture, diatomite mine tailing, expanded vermiculite, coal gangue and wilkinite mine tailing and plant stalk powder.

The production method of Attapulgite volcanoclastic rock lightweight chamotte powder: the finished product that the batching of Attapulgite volcanoclastic rock lightweight chamotte powder is stirred and pulverized, soak, be packaged as Attapulgite volcanoclastic rock lightweight chamotte powder after extruding, roasting, abrasive dust.

Attapulgite clay be a kind of layer of chain-like structure containing Shuifu County's zeopan clay mineral, attapulgite clay soil property exquisiteness, water-absorbent is strong, tool viscosity and plasticity-when wet, be conducive to the bonding between raw material, can improve the sticking power of Attapulgite volcanoclastic rock lightweight chamotte powder.

Attapulgite clay can mix in recovery process a certain amount of rubble and earth, as a kind of attapulgite clay mine tailing, abandons, and causes a large amount of wastings of resources, and the present invention selects the particle fineness of attapulgite clay mine tailing≤2.0 millimeters.

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 are mainly the lava of premature coagulation on volcano, the rock formation that passage is burst on every side when volcanic eruption.The volcanoclastic rock mixture comprises landwaste, brilliant bits, glassiness bits, slurry bits, volcanic block (diameter is greater than 100 millimeters), volcanic gravel (diameter is greater than 2 millimeters) and volcanic ash (diameter is less than 2 millimeters), the volcanoclastic rock main chemical compositions is silicon-dioxide and aluminum oxide, have fire performance preferably and increase the intensity of Attapulgite volcanoclastic rock lightweight chamotte powder, the present invention selects the particle fineness of volcanoclastic rock mixture≤5.0 millimeters.

Diatomite is fine and smooth, loose, light weight, porous, specific surface 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 the particle fineness of diatomite mine tailing≤2.0 millimeters.

The 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 just is expanded vermiculite, has very strong thermal and insulating performance, and the present invention selects the particle fineness of expanded vermiculite≤2.0 millimeters.

Coal gangue is the solid waste discharged in coal mining process and coal washing process, there is lower heating value, carbon containing 20～30%, the present invention uses coal gangue can save part coal, increase the content of aluminum oxide, improve the intensity of Attapulgite volcanoclastic rock lightweight chamotte powder, the present invention selects the particle fineness of coal gangue≤2.0 millimeters.

The rock that wilkinite mainly is comprised of wilkinite, it is the important raw mineral materials of field of metallurgy, the wilkinite mine tailing that the present invention selects is distributed in the lower floor in attapulgite clay ore deposit mostly, be difficult to carry out independent exploitation, but the content of aluminum oxide >=16% in the wilkinite mine tailing, and thering is plasticity-and agglutinating value(of coal), the present invention selects the particle fineness of wilkinite mine tailing≤2.0 millimeters.

Plant stalk powder refers to the meal after the straw crushings such as straw, wheat straw, corn, after the plant straw pruinescence burnouts, can make Attapulgite volcanoclastic rock lightweight chamotte powder have higher void content, the present invention selects the particle fineness of plant stalk powder≤1.5 millimeters.

The present invention is achieved by following technical proposals:

1, the batching of Attapulgite volcanoclastic rock lightweight chamotte powder is comprised of following component by weight percentage: attapulgite clay mine tailing 5～25%, volcanoclastic rock mixture 15～40%, diatomite mine tailing 5～35%, expanded vermiculite 2～25%, coal gangue 2～20%, wilkinite mine tailing 2～15% and plant stalk powder 1～10%;

The production method of described Attapulgite volcanoclastic rock lightweight chamotte powder: (1) the batching of Attapulgite volcanoclastic rock lightweight chamotte powder is added in the two shaft pugmill mixer moved and stirs, stirring, to pulverize in rear input pulverizer be the mixture of Attapulgite volcanoclastic rock lightweight chamotte powder, the particle fineness of Attapulgite volcanoclastic rock lightweight chamotte powder mixture≤0.2 millimeter; (2) will in Attapulgite volcanoclastic rock lightweight chamotte powder mixture input fermentation vat, soak, soak time is controlled at 24～72 hours; (3) in the Attapulgite volcanoclastic rock lightweight chamotte powder mixture input pair roller extrusion machine after soaking, extruding is flap, the thickness of flap≤3.0 millimeter; (4) by the flap of Attapulgite volcanoclastic rock lightweight chamotte powder input rotary type roasting roasting in kilns, maturing temperature is controlled at 650～950 ℃; (5) will the flap of cooled Attapulgite volcanoclastic rock lightweight chamotte powder be processed as meal in the input pulverizing mill, the particle fineness of meal≤0.074 millimeter, be packaged as the finished product of Attapulgite volcanoclastic rock lightweight chamotte powder;

Described batching when soaking in Attapulgite volcanoclastic rock lightweight chamotte powder mixture input fermentation vat, be comprised of following component: Attapulgite volcanoclastic rock lightweight chamotte powder mixture 60～80% and water 20～40% by weight percentage.

Attapulgite volcanoclastic rock lightweight chamotte powder has advantages of that void content is high, volume density is little, the high temperature lower volume is shunk less and thermal conductivity is low.

In the batching of Attapulgite volcanoclastic rock lightweight chamotte powder, the various wastes of a large amount of employing, not only be conducive to improve resource utilization, turns 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.

Attapulgite volcanoclastic rock lightweight chamotte powder is applicable to the fire resistant heat preserving engineering.

Embodiment

Below in conjunction with embodiment, the invention will be further described:

1, the batching of Attapulgite volcanoclastic rock lightweight chamotte powder is comprised of following component by weight percentage: attapulgite clay mine tailing 12%, volcanoclastic rock mixture 30%, diatomite mine tailing 26%, expanded vermiculite 16%, coal gangue 8%, wilkinite mine tailing 6% and plant stalk powder 2%;

The production method of described Attapulgite volcanoclastic rock lightweight chamotte powder: (1) the batching of Attapulgite volcanoclastic rock lightweight chamotte powder is added in the two shaft pugmill mixer moved and stirs, stirring, to pulverize in rear input pulverizer be the mixture of Attapulgite volcanoclastic rock lightweight chamotte powder, the particle fineness of Attapulgite volcanoclastic rock lightweight chamotte powder mixture≤0.2 millimeter; (2) will in Attapulgite volcanoclastic rock lightweight chamotte powder mixture input fermentation vat, soak, soak time is controlled at 48 hours; (3) in the Attapulgite volcanoclastic rock lightweight chamotte powder mixture input pair roller extrusion machine after soaking, extruding is flap, the thickness of flap≤3.0 millimeter; (4) by the flap of Attapulgite volcanoclastic rock lightweight chamotte powder input rotary type roasting roasting in kilns, maturing temperature is controlled at 750～900 ℃; (5) will the flap of cooled Attapulgite volcanoclastic rock lightweight chamotte powder be processed as meal in the input pulverizing mill, the particle fineness of meal≤0.074 millimeter, be packaged as the finished product of Attapulgite volcanoclastic rock lightweight chamotte powder;

Described batching when soaking in Attapulgite volcanoclastic rock lightweight chamotte powder mixture input fermentation vat, be comprised of following component: Attapulgite volcanoclastic rock lightweight chamotte powder mixture 74% and water 26% by weight percentage.

Claims (1)

1. an Attapulgite volcanoclastic rock lightweight chamotte powder, it is characterized in that, the batching of Attapulgite volcanoclastic rock lightweight chamotte powder is comprised of following component by weight percentage: attapulgite clay mine tailing 5～25%, volcanoclastic rock mixture 15～40%, diatomite mine tailing 5～35%, expanded vermiculite 2～25%, coal gangue 2～20%, wilkinite mine tailing 2～15% and plant stalk powder 1～10%;

The production method of described Attapulgite volcanoclastic rock lightweight chamotte powder: (1) the batching of Attapulgite volcanoclastic rock lightweight chamotte powder is added in the two shaft pugmill mixer moved and stirs, stirring, to pulverize in rear input pulverizer be the mixture of Attapulgite volcanoclastic rock lightweight chamotte powder, the particle fineness of Attapulgite volcanoclastic rock lightweight chamotte powder mixture≤0.2 millimeter; (2) will in Attapulgite volcanoclastic rock lightweight chamotte powder mixture input fermentation vat, soak, soak time is controlled at 24～72 hours; (3) in the Attapulgite volcanoclastic rock lightweight chamotte powder mixture input pair roller extrusion machine after soaking, extruding is flap, the thickness of flap≤3.0 millimeter; (4) by the flap of Attapulgite volcanoclastic rock lightweight chamotte powder input rotary type roasting roasting in kilns, maturing temperature is controlled at 650～950 ℃; (5) will the flap of cooled Attapulgite volcanoclastic rock lightweight chamotte powder be processed as meal in the input pulverizing mill, the particle fineness of meal≤0.074 millimeter, be packaged as the finished product of Attapulgite volcanoclastic rock lightweight chamotte powder;

Described batching when soaking in Attapulgite volcanoclastic rock lightweight chamotte powder mixture input fermentation vat, be comprised of following component: Attapulgite volcanoclastic rock lightweight chamotte powder mixture 60～80% and water 20～40% by weight percentage.