CN102627433B

CN102627433B - Sludge environmental protection block

Info

Publication number: CN102627433B
Application number: CN201110089414.2A
Authority: CN
Inventors: 周中德
Original assignee: Individual
Current assignee: Individual
Priority date: 2011-04-11
Filing date: 2011-04-11
Publication date: 2014-04-02
Anticipated expiration: 2031-04-11
Also published as: CN102627433A

Abstract

The invention discloses a sludge environmental protection block and relates to a building block. Present blocks are clay or cement and bath brick. Chamotte brick needs a lot of clay. A lot of fine fields will be destroyed, cement-bath brick will destroy massif and river, and disasters are brought to humans. Therefore, both clay and sand should not be used as a brick-making material. Furtherly, a lot of sludge left after sewage treatment is not effectively utilized. The invention provides the environmental protection block with sludge used as a raw material. The formula of the environmental protection block contains: by weight, 18-25 parts of portland cement, 0.5-1.5 parts of expanded perlite, 25-35 parts of sludge, 8-12 parts of pulverized limestone, 30-40 parts of small broken stone, 5-12 parts of building garbage, 0.5-1 part of foamed plastic fragments and 1-3 parts of industrial fiber. The invention relates to the green industry for environmental protection, and has beneficial effects of excellent product performance, multi-purposes, simple manufacturing industry, energy conservation, low cost and the like.

Description

Sludge environment-friendly building block

Invention field

The present invention relates to building material field, especially building block.

Background technology

Since 21st century, China has entered the large-scale fundamental construction stage, the various buildingss in various places look like to emerge rapidly in large numbersBamboo shoots after a spring rain and rise sheer from level ground, and buildings is more, and the material of construction of consumption is also more, especially various building blocks and brick are the material of main parts of buildings, for traditional clay brick, to consume a large amount of high-quality soils, destroy a large amount of arable lands, affect widely agriculture production, significantly reduce grain yield, directly affected the grain security of China.In addition for some improved fragments of brick, to consume a large amount of sand, building stones, 60% of about total amount replaces clay, as everyone knows, two of sand, stone is originated greatly, and the one, cut into a mountain, another is to dig river, the result of cutting into a mountain is not only and has been destroyed greening, causes soil erosion simultaneously, can not plant trees, lost the function of water moisture self restraint, without rain system drought, rainy system is swung, and very easily cause geologic hazard, cause rubble flow, and then damaged river levee, once flood arrives, and flooding of rivers will occur, and jeopardizes lives and properties along the river.And various places also cut into a mountain arbitrarily forbidding, get stone, dig arbitrarily river and adopt sand.

In our society, exist in addition again a kind of waste material not also being utilized effectively---mud rolling up, " national Pollutant source investigation communique for the first time " according to issue in 2010 pointed out: wastewater treatment in China factory sewage year actual treatment amount is 210.31 hundred million tons, the Eleventh Five-Year Plan period, the newly-increased sewage treatment capacity of China surpasses 5,000 ten thousand tons of every days, and national wastewater treatment rate was by 52% brought up to more than 75% in 2005.The annual dewatered sludge producing of China is 9,000,000 tons at present, and annual with more than 10% speed increase.Although mud is good agricultural fertilizer, wherein nitrogen, phosphorus, potassium content are far above farm manure, and mud also has parasite, germ etc., and bad-smell problem is especially outstanding, if with the mud fertile woods of fertilizing the soil, peasant cannot stand its smell, is unwilling to accept.Moreover agriculture production has seasonality, sludge composting is subject to season and sells the obvious impact of radius, even without also cannot all the dissolve mud of city output of the problem agroforestry utilizations such as stink.So above till now, also to mud, do not find a way out, still the status in waste material, on March 28th, 2011 delivered " sewage disposal; mud how? " on Science and Technology Daily article, appeal that various circles of society are concerned about the problem of sludge treatment, how pendulum is utilized mud in the problem in face of us in environmental protection building block.

Summary of the invention

Object of the present invention, for mud is applied in environmental protection building block, provides a kind of technique simple, saves the energy, the environmental protection building block of excellent property.

the technical scheme that realizes foregoing invention object is as follows:

Sludge environment-friendly building block, has silicate cement, pearlstone, mud, lime powder, small crushed stone, building waste, porous plastics fragment and industrial fiber.The weight part formula of each component is silicate cement 18-25, pearlstone 0.5-1.5, mud 25-35, lime powder 8-12, little Sui Shi≤3mm 30-40, building waste 5-12, porous plastics fragment 0.5-1, industrial fiber 1--3. industrial fiber man-made fiber or glass fibre.

Manufacturing processed is: 1) by lime and mud mix and blend, 2) after solidifying, water suction adds silicate cement, pearlstone, small crushed stone, building waste, porous plastics fragment, industrial fiber and water mixing and stirring, 3) extrusion molding, 4) maintenance can be room temperature maintenance or vapor cure.

Mud in above-mentioned raw materials can be the mud obtaining in sanitary sewage disposal, can be also the mud obtaining during the mud that obtains during industrial sewage is processed or life and industrial combined sewage are processed, in mud containing organism and heavy metal.Mud, first by pre-treatment, dewaters, deodorizing, and organic matter removal and separating beavy metal, then enter brickmaking process.

The present invention uses cement as jointing compound, need be in kiln high temperature sintering, in, just can curing molding during low temperature.

The holllow building block of 390 * 190 * 190mm is carried out to preliminary performance test, can obtain following structure:

Any surface finish, without obvious hole; Odorless.

Mean compressive strength: 10.3MPa

Relative moisture content: 32%

Thermal conductivity: 0.096W/m.k

The present invention also has following beneficial effect:

1. for biosolid waste, open up the field utilizing, protected our living environment;

2. created economic worth, made original stone-broke refuse become the important materials of building industry;

3. building block bulk properties is good, not only has high mechanical property, also has insulation, resistance to cleavage;

4. purposes is various, both can do bearing wall building block, also can do non-bearing building block; Both exterior wall can be built, also interior wall can be built;

5. manufacture craft is simple;

6. with low cost;

7. save energy consumption.

specific embodiments

Now once embodiment is described further technical solution of the present invention.

embodiment 1

1) take 18 parts of silicate cements, 0.5 part of pearlstone, 25 parts, mud, 8 parts of lime powders.30 parts of small crushed stone≤φ 3mm, 5 parts of building wastes, 0.5 part, porous plastics fragment, 1 part, man-made fiber.

2) mud and lime powder being put into JSC500C stirrer stirs 2 minutes;

3) after solidifying, water suction adds silicate cement, pearlstone, small crushed stone, building waste, porous plastics fragment, man-made fiber and water, mix and blend 2 minutes;

4) put on forming mould brick press and suppress, pressure is 4 ~ 5MPa moulding; ,

5) at room temperature maintenance is 5 ~ 8 days, maintenance in winter 15 days, or maintenance in steam, and temperature is 85 ~ 95 ℃, maintenance 18 ~ 20 hours.

embodiment 2

1) take 22 parts of silicate cements, 1 part of pearlstone, 30 parts, mud, 10 parts of lime powders, 35 parts of small crushed stones, 8 parts of building wastes, 0.7 part, porous plastics fragment, 2 parts, glass fibre;

2) following steps are identical with embodiment 1.

embodiment 3

1) take 25 parts of silicate cements, 1.5 parts of pearlstones, 35 parts, mud, 12 parts of lime powders, 40 parts of small crushed stones, 12 parts of building wastes, 1 part, porous plastics fragment, 3 parts, man-made fiber;

2) following steps are identical with embodiment 1.

Claims

1. sludge environment-friendly building block, has silicate cement, and pearlstone is characterized by: also have mud, lime powder, small crushed stone, building waste, porous plastics fragment, industrial fiber; The weight part proportioning of each component is: silicate cement 18-25, pearlstone 0.5-1.5, mud 25-35, lime powder 8-12, small crushed stone 30-40, building waste 5-12, porous plastics fragment 0.5-1, industrial fiber 1-3.

2. sludge environment-friendly building block according to claim 1, it is characterized by industrial fiber is man-made fiber or glass fibre.

3. the preparation method of the sludge environment-friendly building block described in claim 1, it is characterized by lime powder and mud mix and blend, after water suction is solidified, add cement, pearlstone, small crushed stone, building waste, porous plastics fragment, industrial fiber and water, mixing and stirring, extrusion molding, maintenance.

4. the preparation method of sludge environment-friendly building block according to claim 3, it is characterized by maintenance is room temperature maintenance or vapor cure.