CN102924051A - Attapulgite shale river-bottom sludge sintering thermal-insulation building block - Google Patents

Abstract

The invention discloses an attapulgite shale river-bottom sludge sintering thermal-insulation building block. The technical scheme has key points that ingredients of the attapulgite shale river-bottom sludge sintering thermal-insulation building block consist of attapulgite clay tailing powder, shale powder, river-bottom sludge, pyroclastic rock mixture, coal gangue, bentonite tailing powder, expanded perlite and straw powder. The ingredients are stirred uniformly and then are conveyed into a full-automatic building block forming machine to be pressed to form a semi-finished product of the attapulgite shale river-bottom sludge sintering thermal-insulation building block, the semi-finished product is dried naturally and then is conveyed to a tunnel kiln to be sintered to form a finished product of the attapulgite shale river-bottom sludge sintering thermal-insulation building block. The attapulgite shale river-bottom sludge sintering thermal-insulation building block has the characteristics the strength is good, and the building block is thermal-insulation, energy-saving and sound-insulation, fireproofing and flame-retardant; the ingredients adopt a large amount of various wastes, thereby not only being beneficial for improving a resource utilization ratio and turning wastes into wealth, but also reducing occupied land, protecting and purifying the environment and saving energy sources; and the attapulgite shale river-bottom sludge sintering thermal-insulation building block is suitable for thermal-insulation construction of a wall body.

Description

Attapulgite shale bed-silt sintering heat insulation building block

Technical field

The present invention relates to building material field, be specifically related to a kind of Attapulgite shale bed-silt sintering heat insulation building block.

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 building block 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 green bricks after very thin, otherwise dried shale building block 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 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, 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 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.

China is for administering the water quality deterioration of harbour, navigation channel, lake and river water, to take dredging engineering mostly, the bed-silt amount that dredging engineering produces increases day by day, moiety is complicated, easily produce secondary pollution, deal with improperly and will cause totally unfavorable impact to environment, thereby the processing of dredging bed-silt has just been become people's question of common concern.

Summary of the invention

The objective of the invention is to overcome weak point in the prior art, a kind of Attapulgite shale bed-silt sintering heat insulation building block is provided.

The batching of Attapulgite shale bed-silt sintering heat insulation building block is comprised of attapulgite clay mine tailing, shale powder, bed-silt, volcanoclastic rock mixture, coal gangue, wilkinite mine tailing, pearlstone and straw powder.

The production method of Attapulgite shale bed-silt sintering heat insulation building block: be transported in the fully-automatic building block forming machine after the batching of Attapulgite shale bed-silt sintering heat insulation building block stirred, be pressed into the work in-process of Attapulgite shale bed-silt sintering heat insulation building block, be transported to the finished product that tunnel kiln sintering becomes Attapulgite shale bed-silt sintering heat insulation building block 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, and can improve intensity and the porosity of Attapulgite shale bed-silt sintering heat insulation building block.

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≤0.15 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≤0.15 millimeter.

Bed-silt is to have abandoned or concentrated the mud of stacking in the engineerings such as dredging harbour, navigation channel, lake and river, the bed-silt water ratio that the present invention selects≤15%, particle fineness≤5.0 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 Attapulgite shale bed-silt sintering heat insulation building block, the present invention selects the volcanoclastic rock mixture after the pulverizing, particle fineness≤0.25 millimeter.

Coal gangue is the solid waste that discharges in coal mining process and the coal washing process, the present invention uses coal gangue can save the energy, increase the content of aluminum oxide, improve the intensity of Attapulgite shale bed-silt sintering heat insulation building block, the present invention selects the particle fineness of coal gangue≤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≤0.15 millimeter.

Pearlstone be perlite ore through preheating, a kind of inside of making behind the TRANSIENT HIGH TEMPERATURE calcining expansion is the material of the white granular of polynuclear plane.The characteristics such as pearlstone has that apparent density is light, thermal conductivity is low, chemical stability is good, the use temperature scope is wide, wettability power is little, nontoxic, tasteless, fire prevention and sound-absorbing, swelling perlite powder after the present invention selects and pulverizes, particle fineness≤0.15 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 Attapulgite shale bed-silt sintering heat insulation building block that the present invention adopts straw powder, Attapulgite shale bed-silt sintering heat insulation building block 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 Attapulgite shale bed-silt sintering heat insulation building block is comprised of following component by weight percentage: attapulgite clay mine tailing 2～25%, shale powder 10～35%, bed-silt 5～25%, volcanoclastic rock mixture 2～15%, coal gangue 2～15%, wilkinite mine tailing 2～15%, swelling perlite powder 1～15%, straw powder 1～10% and water 5～35%;

The production method of described Attapulgite shale bed-silt sintering heat insulation building block: ⑴ adds the batching of Attapulgite shale bed-silt sintering heat insulation building block in the two shaft pugmill mixer that has moved and stirs, be transported to after stirring in the fully-automatic building block forming machine, be pressed into the work in-process of Attapulgite shale bed-silt sintering heat insulation building block; ⑵ send into work in-process to dry and carry out nature in the room and dry, and is transported to the tunnel furnace roasting 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 2～6 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 2～8 hours; ⑷ naturally cooling behind the sintering is packaged as the finished product of Attapulgite shale bed-silt sintering heat insulation building block;

Described half-finished water ratio per-cent is weight ratio.

Be divided into three phases in the Attapulgite shale bed-silt sintering heat insulation building block roasting process, be conducive to slowly improve maturing temperature, prevent that Attapulgite shale bed-silt sintering heat insulation building block from producing explosion, guarantees the quality of product.

Attapulgite shale bed-silt sintering heat insulation building block 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 Attapulgite shale bed-silt sintering heat insulation building block, 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.

Attapulgite shale bed-silt sintering heat insulation building block is applicable to the wall thermal insulating construction

Embodiment

1, the batching of Attapulgite shale bed-silt sintering heat insulation building block is comprised of following component by weight percentage: attapulgite clay mine tailing 15%, shale powder 24%, bed-silt 12%, volcanoclastic rock mixture 8%, coal gangue 6%, wilkinite mine tailing 5%, swelling perlite powder 3%, straw powder 2% and water 25%;

The production method of described Attapulgite shale bed-silt sintering heat insulation building block: ⑴ adds the batching of Attapulgite shale bed-silt sintering heat insulation building block in the two shaft pugmill mixer that has moved and stirs, be transported to after stirring in the fully-automatic building block forming machine, be pressed into the work in-process of Attapulgite shale bed-silt sintering heat insulation building block; ⑵ send into work in-process to dry and carry out nature in the room and dry, and is transported to the tunnel furnace roasting 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 3 hours; The subordinate phase maturing temperature is controlled at 300～800 ℃, and roasting time is controlled at 5 hours; The phase III maturing temperature is controlled at 800～1050 ℃, and roasting time is controlled at 3 hours; ⑷ naturally cooling behind the sintering is packaged as the finished product of Attapulgite shale bed-silt sintering heat insulation building block.

Claims (1)

1. Attapulgite shale bed-silt sintering heat insulation building block, it is characterized in that, the batching of Attapulgite shale bed-silt sintering heat insulation building block is comprised of following component by weight percentage: attapulgite clay mine tailing 2～25%, shale powder 10～35%, bed-silt 5～25%, volcanoclastic rock mixture 2～15%, coal gangue 2～15%, wilkinite mine tailing 2～15%, swelling perlite powder 1～15%, straw powder 1～10% and water 5～35%;

The production method of described Attapulgite shale bed-silt sintering heat insulation building block: ⑴ adds the batching of Attapulgite shale bed-silt sintering heat insulation building block in the two shaft pugmill mixer that has moved and stirs, be transported to after stirring in the fully-automatic building block forming machine, be pressed into the work in-process of Attapulgite shale bed-silt sintering heat insulation building block; ⑵ send into work in-process to dry and carry out nature in the room and dry, and is transported to the tunnel furnace roasting 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 2～6 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 2～8 hours; ⑷ naturally cooling behind the sintering is packaged as the finished product of Attapulgite shale bed-silt sintering heat insulation building block;

Described half-finished water ratio per-cent is weight ratio.