CN102863241A - Production method of basic refractory attapulgite volcaniclastic-rock aggregate - Google Patents

Abstract

The invention discloses a production method of basic refractory attapulgite volcaniclastic-rock aggregate. The production method in the technical scheme is mainly characterized by including the steps of uniformly stirring the ingredients, crushing, soaking, extruding, roasting, crushing, screening and packaging so that a finished product of the basic refractory attapulgite volcaniclastic-rock aggregate is obtained. The basic refractory attapulgite volcaniclastic-rock aggregate comprises highly-viscous attapulgite clay powder, dolomite attapulgite clay tailings, volcaniclastic rock mixture, magnesite, serpentine, coal gangue and bentonite tailings, and has the advantages of good particle strength, high refractoriness and high basic slag resistance. The basic refractory attapulgite volcaniclastic-rock aggregate 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, production cost is lowered, and economic benefit is improved. The basic refractory attapulgite volcaniclastic-rock aggregate is applicable to engineering of basic steel refining furnaces, non-ferrous metal smelting furnaces, cement kilns and the like.

Description

The production method of Attapulgite volcanoclastic rock alkalescence refractory aggregate

Technical field

The present invention relates to refractory materials, be specifically related to a kind of production method of Attapulgite volcanoclastic rock alkalescence refractory aggregate.

Background technology

Basic refractory mainly refers to take the refractory materials that magnesium oxide, calcium oxide is main component, and basic refractory has stronger corrosion resistance to basic slag.

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 production method of Attapulgite volcanoclastic rock alkalescence refractory aggregate is provided.

The production method of Attapulgite volcanoclastic rock alkalescence refractory aggregate: the finished product that the batching of Attapulgite volcanoclastic rock alkalescence refractory aggregate is stirred and pulverized, soak, be packaged as Attapulgite volcanoclastic rock alkalescence refractory aggregate after extruding, roasting, pulverizing and screening.

The batching of Attapulgite volcanoclastic rock alkalescence refractory aggregate is comprised of the sticky attapulgite clay powder of height, rhombspar attapulgite clay mine tailing, volcanoclastic rock mixture, magnesite, serpentine, coal gangue and wilkinite mine tailing.

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 granule strength, sticking power and the porosity of Attapulgite volcanoclastic rock alkalescence refractory aggregate.

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, the suspension cup is placed on homogenizer, under the rotating speed of 11000 rev/mins, stir 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 be tested its suspension, tested viscosity value>=2200 into mPasthe attapulgite clay powder be high sticky 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, as a kind of attapulgite clay mine tailing, abandon, cause a large amount of wastings of resources, more containing magnesian amount in the rhombspar attapulgite clay, and quality is harder, the rhombspar attapulgite clay mine tailing particle fineness that the present invention selects≤1.0 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, there is fire performance and the intensity that increases Attapulgite volcanoclastic rock alkalescence refractory aggregate, the volcanoclastic rock particle fineness that the present invention selects≤5.0 millimeters preferably.

Magnesite is a kind of magnesiumcarbonate mineral, and it is the main source of magnesium, the using magnesite granule fineness that the present invention selects≤2.0 millimeters.

Serpentine is high magnesium mineral, has heat-resisting, anticorrosive, wear-resisting, heat insulation, sound insulation, operational characteristic preferably, the serpentine particles fineness that the present invention selects≤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 alkalescence refractory aggregate, the coal gangue particle fineness that the present invention selects≤3.0 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 there is plasticity-and agglutinating value(of coal), the coal gangue particle fineness that the present invention selects≤1.0 millimeters.

The present invention is achieved by following technical proposals:

1, the production method of Attapulgite volcanoclastic rock alkalescence refractory aggregate: (1) the batching of Attapulgite volcanoclastic rock alkalescence refractory aggregate is added in the two shaft pugmill mixer moved and stirs, stir in rear input pulverizer and pulverize the mixture for Attapulgite volcanoclastic rock alkalescence refractory aggregate, the particle fineness of Attapulgite volcanoclastic rock alkalescence refractory aggregate mixture≤0.1 millimeter; (2) will in Attapulgite volcanoclastic rock alkalescence refractory aggregate mixture input fermentation vat, soak, soak time is controlled at 24～72 hours; (3) in the Attapulgite volcanoclastic rock alkalescence refractory aggregate mixture input pair roller extrusion machine after soaking, extruding is flap, the thickness of flap≤6.0 millimeter; (4) by Attapulgite volcanoclastic rock alkalescence refractory aggregate flap input rotary type roasting roasting in kilns, maturing temperature is controlled at 650～950 ℃; (5) cooled Attapulgite volcanoclastic rock alkalescence refractory aggregate flap is pulverized and screening, it is 3.1～3.7 millimeters that the particle fineness of coarse aggregate is controlled, it is 2.3～3.0 millimeters that the particle fineness of middle aggregate is controlled, it is 1.6～2.2 millimeters that the particle fineness of fine aggregate is controlled, and is packaged as respectively the finished product of Attapulgite volcanoclastic rock alkalescence refractory aggregate;

The batching of described Attapulgite volcanoclastic rock alkalescence refractory aggregate is comprised of following component by weight percentage: high sticky attapulgite clay powder 2～15%, rhombspar attapulgite clay mine tailing 5～25%, volcanoclastic rock mixture 15～35%, magnesite 5～35%, serpentine 5～25%, coal gangue 5～15% and wilkinite mine tailing 2～15%;

Described batching when soaking in Attapulgite volcanoclastic rock alkalescence refractory aggregate mixture input fermentation vat, be comprised of following component: Attapulgite volcanoclastic rock alkalescence refractory aggregate mixture 55～80% and water 20～45% by weight percentage.

Attapulgite volcanoclastic rock alkalescence refractory aggregate has that granule strength is good, refractoriness is high, the strong characteristics of ability of opposing basic slag.

The various wastes of a large amount of employing in the batching of Attapulgite volcanoclastic rock alkalescence refractory aggregate, not only be conducive to improve resource utilization, turns waste into wealth, and can also reduce land occupation, and protection and environment purification, save the energy, reduces production costs, and increases economic efficiency.

Attapulgite volcanoclastic rock alkalescence refractory aggregate is applicable to the engineerings such as alkaline steel melting furnace, non-ferrous metal smelting furnace and cement kiln.

Embodiment

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

1, the production method of Attapulgite volcanoclastic rock alkalescence refractory aggregate: (1) the batching of Attapulgite volcanoclastic rock alkalescence refractory aggregate is added in the two shaft pugmill mixer moved and stirs, stir in rear input pulverizer and pulverize the mixture for Attapulgite volcanoclastic rock alkalescence refractory aggregate, the particle fineness of Attapulgite volcanoclastic rock alkalescence refractory aggregate mixture≤0.1 millimeter; (2) will in Attapulgite volcanoclastic rock alkalescence refractory aggregate mixture input fermentation vat, soak, soak time is controlled at 48 hours; (3) in the Attapulgite volcanoclastic rock alkalescence refractory aggregate mixture input pair roller extrusion machine after soaking, extruding is flap, the thickness of flap≤6.0 millimeter; (4) by Attapulgite volcanoclastic rock alkalescence refractory aggregate flap input rotary type roasting roasting in kilns, maturing temperature is controlled at 800～900 ℃; (5) cooled Attapulgite volcanoclastic rock alkalescence refractory aggregate flap is pulverized and screening, the particle fineness of coarse aggregate is 3.5 millimeters, the particle fineness of middle aggregate is 2.8 millimeters, the particle fineness of fine aggregate is 2.0 millimeters, is packaged as respectively the finished product of Attapulgite volcanoclastic rock alkalescence refractory aggregate;

The batching of described Attapulgite volcanoclastic rock alkalescence refractory aggregate is comprised of following component by weight percentage: high sticky attapulgite clay powder 9%, rhombspar attapulgite clay mine tailing 10%, volcanoclastic rock mixture 26%, magnesite 28%, serpentine 16%, coal gangue 6% and wilkinite mine tailing 5%;

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

Claims (1)

1. the production method of Attapulgite volcanoclastic rock alkalescence refractory aggregate, it is characterized in that, (1) the batching of Attapulgite volcanoclastic rock alkalescence refractory aggregate is added in the two shaft pugmill mixer moved and stirs, stir in rear input pulverizer and pulverize the mixture for Attapulgite volcanoclastic rock alkalescence refractory aggregate, the particle fineness of Attapulgite volcanoclastic rock alkalescence refractory aggregate mixture≤0.1 millimeter; (2) will in Attapulgite volcanoclastic rock alkalescence refractory aggregate mixture input fermentation vat, soak, soak time is controlled at 24～72 hours; (3) in the Attapulgite volcanoclastic rock alkalescence refractory aggregate mixture input pair roller extrusion machine after soaking, extruding is flap, the thickness of flap≤6.0 millimeter; (4) by Attapulgite volcanoclastic rock alkalescence refractory aggregate flap input rotary type roasting roasting in kilns, maturing temperature is controlled at 650～950 ℃; (5) cooled Attapulgite volcanoclastic rock alkalescence refractory aggregate flap is pulverized and screening, it is 3.1～3.7 millimeters that the particle fineness of coarse aggregate is controlled, it is 2.3～3.0 millimeters that the particle fineness of middle aggregate is controlled, it is 1.6～2.2 millimeters that the particle fineness of fine aggregate is controlled, and is packaged as respectively the finished product of Attapulgite volcanoclastic rock alkalescence refractory aggregate;

The batching of described Attapulgite volcanoclastic rock alkalescence refractory aggregate is comprised of following component by weight percentage: high sticky attapulgite clay powder 2～15%, rhombspar attapulgite clay mine tailing 5～25%, volcanoclastic rock mixture 15～35%, magnesite 5～35%, serpentine 5～25%, coal gangue 5～15% and wilkinite mine tailing 2～15%;

Described batching when soaking in Attapulgite volcanoclastic rock alkalescence refractory aggregate mixture input fermentation vat, be comprised of following component: Attapulgite volcanoclastic rock alkalescence refractory aggregate mixture 55～80% and water 20～45% by weight percentage;

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, the suspension cup is placed on homogenizer, under the rotating speed of 11000 rev/mins, stir 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 be tested its suspension, tested viscosity value>=2200 into mPasthe attapulgite clay powder be high sticky attapulgite clay powder, the height that the present invention selects glues attapulgite clay powder particles fineness≤0.074 millimeter.