Background technology
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 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, investigate factually, 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 produced 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.
Haydite is a kind of artificial lightweight coarse aggregate, and case surface is coarse and hard, and inner porous, generally formed through pulverizing, granulation, sintering and screening by materials such as shale, clay rocks.
China worsens the dredging engineering generation of taking dredging bed-silt amount for administering water quality of landscape water increases day by day, because the bed-silt water ratio is greater than 75%, the moiety complexity, easily produce secondary pollution, mishandlingly will cause totally unfavorable impact to environment, thereby the treatment and disposal of dredging bed-silt just become to people's question of common concern.
The plasticity-of bed-silt is better, but water ratio is large and content ferric oxide is lower, directly has influence on bed-silt haydite production cost and quality.
Summary of the invention
The objective of the invention is to overcome weak point in prior art, a kind of Attapulgite river bottom silt ceramsite insulating brick is provided.
The production method of Attapulgite river bottom silt ceramsite insulating brick: the batching of Attapulgite river bottom silt ceramsite insulating brick process is stirred, be pressed into difform Attapulgite river bottom silt ceramsite insulating brick work in-process, be transported to the finished product that tunnel kiln sintering becomes the Attapulgite river bottom silt ceramsite insulating brick.The batching of Attapulgite river bottom silt ceramsite insulating brick is comprised of the sticky attapulgite clay powder of height, attapulgite clay mine tailing, volcanoclastic rock mixture, spherical attapulgite bed silt ceramsites, wilkinite mine tailing and straw powder.
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, and can improve intensity and the porosity of Attapulgite river bottom silt ceramsite insulating brick.
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, can't be sieved, 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≤0.149 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 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, volcanic gravel and volcanic ash, volcanoclastic rock can increase the intensity of Attapulgite river bottom silt ceramsite insulating brick, the present invention selects the volcanoclastic rock mixture after pulverizing, particle fineness≤5.0 millimeter.
Spherical attapulgite bed silt ceramsites is spheroidal, epidermis is coarse and hard, there is a large amount of trickle pores inside, be a kind of lightweight, intensity is high, thermal conductivity is low, refractoriness is high, chemical stability is good, weather resistance and the good building porcelain granule of heat preservation and soundproof performance.The present invention selects the particle diameter of spherical attapulgite bed silt ceramsites≤20.0 millimeters.
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 the mine tailing district, and the present invention selects the wilkinite mine tailing after pulverizing, particle fineness≤0.25 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 after the results seed.It is in order to increase the porosity of Attapulgite river bottom silt ceramsite insulating brick that the present invention adopts straw powder, the Attapulgite river bottom silt ceramsite insulating brick is in roasting process, straw burning in insulating brick is ashes, form a large amount of micropores, the present invention selects the straw powder after pulverizing, particle fineness≤1.0 millimeter.
The present invention is achieved by following technical proposals:
1, the batching of Attapulgite river bottom silt ceramsite insulating brick is comprised of following component by weight percentage: high sticky attapulgite clay powder 2~15%, attapulgite clay mine tailing 5~25%, volcanoclastic rock mixture 5~25%, spherical attapulgite bed silt ceramsites 5~25%, wilkinite mine tailing 5~15%, straw powder 1~10% and water 10~35%;
The production method of described Attapulgite river bottom silt ceramsite insulating brick: (1) the batching of Attapulgite river bottom silt ceramsite insulating brick is added in the two shaft pugmill mixer moved and stirs, be transported to after stirring in fully-automatic building block forming machine, be pressed into difform Attapulgite river bottom silt ceramsite insulating brick work in-process; (2) work in-process are sent into to dry in room and carried out nature and dry, be transported to the tunnel furnace roasting after half-finished water ratio≤15%; (3) be divided into three phases in roasting process: the first stage maturing temperature is controlled at 30~350 ℃, and roasting time is controlled at 3~8 hours; The subordinate phase maturing temperature is controlled at 350~850 ℃, and roasting time is controlled at 4~15 hours; The phase III maturing temperature is controlled at 850~1150 ℃, and roasting time is controlled at 3~10 hours; (4) naturally cooling after sintering, be packaged as the finished product of Attapulgite river bottom silt ceramsite insulating brick;
Describedly be pressed into difform Attapulgite river bottom silt ceramsite insulating brick work in-process, refer to according to the design needs, be pressed into the Attapulgite river bottom silt ceramsite insulating brick work in-process of square, rectangle, trilateral, ellipse, trapezoidal, quincunx, rhombus;
Described half-finished water ratio per-cent is weight ratio;
Described spherical attapulgite bed silt ceramsites is comprised of the sticky attapulgite clay powder of height, attapulgite clay mine tailing, bed-silt, red bentonite in powder, flyash and wood dust; The production method of spherical attapulgite bed silt ceramsites: be spherical attapulgite bed silt ceramsites through mixing, granulation, roasting, cooling and screening by the batching of spherical attapulgite bed silt ceramsites.
Spherical attapulgite bed silt ceramsites is the patent of invention that the inventor applied on November 10th, 2011, China Patent Publication No.: 102515837A, open day: on 06 27th, 2012.
Be divided into three phases in Attapulgite river bottom silt ceramsite insulating brick roasting process, be conducive to slowly improve maturing temperature, guarantee the quality of product.
The Attapulgite river bottom silt ceramsite insulating brick has that intensity is good, the characteristics of light weight antidetonation, heat preservation energy-saving, sound-insulating and heat-insulating, fire protection flame retarding and reduction building construction load.
In the batching of Attapulgite river bottom silt ceramsite insulating brick, 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.
The Attapulgite river bottom silt ceramsite insulating brick is applicable to the wall construction of various buildings
.