CN109734367A - A kind of Environment-friendlysulfuric sulfuric acid aluminium slag building filler and its production method - Google Patents

A kind of Environment-friendlysulfuric sulfuric acid aluminium slag building filler and its production method Download PDF

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Publication number
CN109734367A
CN109734367A CN201910194684.6A CN201910194684A CN109734367A CN 109734367 A CN109734367 A CN 109734367A CN 201910194684 A CN201910194684 A CN 201910194684A CN 109734367 A CN109734367 A CN 109734367A
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slag
high calcium
aluminium
weight
aluminium sulfate
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许福
谭鑫阳
陈滨彬
熊文豪
王伟烨
龙士国
罗百福
陈俊
杨才千
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Xiangtan University
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Xiangtan University
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    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02WCLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
    • Y02W30/00Technologies for solid waste management
    • Y02W30/50Reuse, recycling or recovery technologies
    • Y02W30/91Use of waste materials as fillers for mortars or concrete

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Abstract

A kind of Environment-friendlysulfuric sulfuric acid aluminium slag building filler, which includes following components: aluminium sulfate slag 40-70 parts by weight, high calcium Desulphurization 30-60 parts by weight, water 35-85 parts by weight;Aluminium sulfate slag and high calcium Desulphurization mix by stirring, and form filler mixture.A kind of Environment-friendlysulfuric sulfuric acid aluminium slag provided by the invention builds filler, in such a way that high calcium Desulphurization is mixed with aluminium sulfate slag, the pH value of aluminium sulfate slag waste material is adjusted, to reduce destruction of the aluminium sulfate slag to environment.In addition the calcium hydroxide in Desulphurization (or calcium oxide) is used as alkali-activator, the soluble silicon in aluminium sulfate slag, aluminium can be made to generate hydrated calcium silicate gel and drated calcium aluminate gel, to improve the intensity of mixed fillers.It solves high calcium Desulphurization and aluminium sulfate slag disposition amount lacks and the situation of environmental pollution, and won economic benefit: reducing the cost of disposal of solid waste, produce economic benefit on this basis.

Description

A kind of Environment-friendlysulfuric sulfuric acid aluminium slag building filler and its production method
Technical field
The present invention relates to a kind of building fillers, and in particular to a kind of Environment-friendlysulfuric sulfuric acid aluminium slag building filler belongs to Building wood Material field.
Background technique
High calcium Desulphurization is the Industrial Solid Waste that steel plant's dry desulfurization generates, since China carries forward vigorously flue gas desulfurization, subtracts Few sulfur dioxide (SO2) emissions have done a large amount of work in terms of mitigating acid rain harm, on the basis of realizing most of industrially desulfurized, companion As a large amount of desulfurizing byproduct generates, generated desulfurizing byproduct how is dissolved, it is not allowed to become pollution sources, is to solve to take off The problem of sulphur by-product is considered.And high calcium Desulphurization, as one such, pH value 13-14, calcium hydroxide content is about 8%-10%, partial size is smaller, and characteristic is unstable.In the prior art, application is also used mainly to backfill based on the mine exploited In cement admixture and sandstone ash tile product etc., dosage is small.If high calcium Desulphurization cannot continue largely to utilize, it will limitation The application of the technology of high calcium Desulphurization, and enterprise needs to expend a large amount of manpower, financial resources and place and goes stacking high calcium de- Sulphur ash, easily causes air pollution problems inherent.
Aluminium sulfate slag is the industrial by-products generated during producing aluminum sulfate, and the bauxite taste of Hengyang Area is not high, The aluminum sulfate of one ton of production can generate a large amount of aluminium sulfate slag, since aluminium sulfate slag is acid slag, pH value 3.8-4.2, partial size Size is to cause its recycling rate of waterused lower between 1-2000 microns.Currently, aluminium sulfate slag mixes in cement as admixture, Its volume is that 5%-8% can not be mixed largely since its loss on ignition reaches 28%.Aluminium sulfate slag application has: as reclaimed polypropylene Expect, white carbon black is extracted from aluminum sulfate, prepares waterglass etc., use above can not all dissolve a large amount of aluminium sulfate slag.Aluminum sulfate The mode that slag is handled at present is predominantly accumulated, is filled, and be will lead to the environment such as soil acidification, vegetation deterioration, underground water pollution and is asked Topic, influences the development of regional economy.
Attention with people to environmental protection, the protection of Environmental, and relevant Environment Protection Policy has been put into effect, " the Chinese name republic Law on Environmental Protection " that on January 1st, 2018 implements, the tax of each ton of aluminium sulfate slag or high calcium Desulphurization are 25 yuan per ton, particularly disadvantageous for the development of enterprise.
Summary of the invention
It is difficult to handle for the above-mentioned Desulphurization of high calcium in the prior art and aluminium sulfate slag, and there are environmental pollutions etc. to ask Topic, it is an object of the present invention to adjust the soda acid of aluminium sulfate slag waste material in such a way that high calcium Desulphurization is mixed with aluminium sulfate slag Degree, to reduce destruction of the aluminium sulfate slag to environment.High calcium Desulphurization and aluminium sulfate slag are mixed with building filler, using de- Calcium hydroxide in sulphur ash can make the soluble silicon in aluminium sulfate slag, aluminium generate hydrated calcium silicate gel as alkali-activator With drated calcium aluminate gel, to improve the intensity of mixed fillers.
According to the first embodiment of the present invention, a kind of Environment-friendlysulfuric sulfuric acid aluminium slag building filler is provided:
A kind of Environment-friendlysulfuric sulfuric acid aluminium slag building filler, which includes following components: aluminium sulfate slag 40-70 weight Part, high calcium Desulphurization 30-60 parts by weight, water 35-85 parts by weight;Aluminium sulfate slag and high calcium Desulphurization mix by stirring, and are formed Filler mixture.
Preferably, the building filler includes following components: aluminium sulfate slag 42-68 parts by weight, high calcium Desulphurization 32-58 weight Measure part, water 37-80 parts by weight;Aluminium sulfate slag and high calcium Desulphurization mix by stirring, and form filler mixture.
Preferably, the building filler includes following components: aluminium sulfate slag 45-65 parts by weight, high calcium Desulphurization 35-55 weight Measure part, water 40-75 parts by weight;Aluminium sulfate slag and high calcium Desulphurization mix by stirring, and form filler mixture.
Preferably, the building filler includes following components: aluminium sulfate slag 50-60 parts by weight, high calcium Desulphurization 40-50 weight Measure part, water 45-70 parts by weight;Aluminium sulfate slag and high calcium Desulphurization mix by stirring, and form filler mixture.
Preferably, the partial size of the aluminium sulfate slag be 0.01-1mm, preferably 0.1-0.8mm, further preferably 0.2-0.5mm, more preferably 0.25-0.4mm.
Preferably, the partial size of the high calcium Desulphurization be 0.01-1mm, preferably 0.1-0.8mm, further preferably 0.2-0.5mm, more preferably 0.25-0.4mm.
In this application, aluminium sulfate slag is the by-product generated during producing aluminum sulfate, belongs to waste material.High calcium Desulphurization It is the industrial solid waste that steel plant's dry desulfurization generates.A large amount of soluble aluminum, solubility are contained in aluminium sulfate slag waste material Silicon and a certain amount of sulfur trioxide.Sulfur trioxide can react to form sulfuric acid with water.Therefore the aobvious acidity of aluminium sulfate slag, by acidification soil Earth, welding.So that aluminium sulfate slag waste material is at acidity, soil can be damaged by arbitrarily stacking.High calcium Desulphurization is useless In material, a large amount of calcium hydroxide (or calcium oxide) is contained.
The present invention mixes aluminium sulfate slag waste material and high calcium Desulphurization waste material.The first, it may make the oxygen in high calcium Desulphurization Change calcium and react generation calcium hydroxide, the acidic materials such as sulfur trioxide in calcium hydroxide neutralisation of sulphuric acid aluminium slag with water, reaction generates Calcium sulfate and aluminum hydroxide precipitation, so that the pH value of aluminium sulfate slag waste material is adjusted to alkalinity.The second, pass through appropriate excessive height Calcium desulfurizing ash (calcium oxide content in high calcium Desulphurization is higher) is mixed with aluminium sulfate slag, the hydrogen-oxygen generated using high calcium Desulphurization Change calcium be used as alkali-activator, in aluminium sulfate slag soluble aluminum and soluble silicon reacted, generation calcium aluminate, calcium silicates and Calcium sulfate.Calcium aluminate and calcium silicates under alkaline condition, generate hydrated calcium silicate gel and drated calcium aluminate gel.Alkalinity compared with Under conditions of low, drated calcium aluminate is reacted with calcium sulfate generates entringite.Since aluminium sulfate slag and high calcium Desulphurization are sufficiently mixed, The entringite of generation is packed into mixture between various substances, and volume becomes larger, and plays the role of improving mixture intensity.Make Mixture is obtained to be suitable for doing the filling on road surface or pipeline gully.Therefore, in conclusion aluminium sulfate slag and high calcium Desulphurization are mixed It closes, can effectively improve the acid-base property of aluminium sulfate slag, simultaneously because generating entringite is packed into substance gap, improve aluminium sulfate slag With the intensity of the mixture of high calcium Desulphurization.
In addition, the ingredient that the sulfur trioxide in aluminium sulfate slag is not fully utilized when being extracting sulfuric acid aluminium;In high calcium Desulphurization Also include desulfurization when remaining desulfurizing agent, desulfurizing agent generally uses calcium hydroxide.
It should be noted that the present invention program is using the scheme for directly mixing aluminium sulfate slag and high calcium Desulphurization, sulphur The usage amount of acidic aluminium slag and high calcium Desulphurization is big, can largely consume aluminium sulfate slag and high calcium Desulphurization these industrial wastes.Together When by its product be used for engineering construction construction in, play the effect of the treatment of wastes with processes of wastes against one another.Efficiently solve aluminium sulfate slag waste material The problem of excessive pollution environment.
In this application, right according to the content of calcium hydroxide in the content of sulfur oxide in aluminium sulfate slag and high calcium Desulphurization The mixing match of aluminium sulfate slag and high calcium Desulphurization carries out adjusting appropriate.To be suitble to different actual demands.
In this application, a certain amount of water is added according to certain ratio of mud, may advantageously facilitate aluminium sulfate slag and high calcium is de- Substance reaction in sulphur ash.According to the adjusting of Different Water-Cement Ratio, the production quantity of entringite can be effectively controlled, to adjust sulphur The intensity of acidic aluminium slag and high calcium Desulphurization mix products.To meet the needs of different construction.
In the present invention, aluminium sulfate slag waste material and high calcium Desulphurization waste material are mixed, mutually utilizes content in two kinds of waste materials Biggish component, the acidic materials using the calcium component that contains in high calcium Desulphurization, in neutralisation of sulphuric acid aluminium slag;Meanwhile utilizing high calcium Contain calcium component in Desulphurization, as exciting agent, using in aluminium sulfate slag soluble silicon and aluminium be raw material, prepare and build Build filler.The solution of the present invention solves high calcium Desulphurization and aluminium sulfate slag disposition amount lacks and the situation of environmental pollution, Er Qieying It obtained economic benefit: reducing the cost of disposal of solid waste, and produced certain economic benefit on this basis.Present invention symbol Close the guiding of national policy and the developing direction of enterprise.
According to the second embodiment of the present invention, a kind of production method of Environment-friendlysulfuric sulfuric acid aluminium slag building filler is provided:
Environmental protection described in any one of a kind of production method of Environment-friendlysulfuric sulfuric acid aluminium slag building filler or preparation claim 1-5 The method that type aluminium sulfate slag builds filler, method includes the following steps:
(1) aluminium sulfate slag is dry, grinding, sieving obtains aluminium sulfate slag powder;
(2) by high calcium Desulphurization grinding, sieving obtains high calcium Desulphurization powder;
(3) aluminium sulfate slag powder and high calcium Desulphurization powder are mixed, water is added, is stirred, obtains environment-friendly type Aluminium sulfate slag builds filler.
In this application, step (2) by after drying aluminium sulfate slag and high calcium Desulphurization be respectively placed in ball mill and carry out Ball milling processing.The revolving speed of ball mill is set as 100r/s, and Ball-milling Time is 30 minutes.After processing, using sieve to aluminum sulfate Slag and high calcium Desulphurization are screened, and leave aluminium sulfate slag of the granularity less than 0.3mm and high calcium Desulphurization carries out the next step. The aluminium sulfate slag and high calcium Desulphurization that screening leaves in step (2) are mixed step (3), by the way that the more of water are added It is small come adjust product hardening after intensity.
According to the third embodiment the present invention, a kind of production method of Environment-friendlysulfuric sulfuric acid aluminium slag building block is provided:
A kind of production method of Environment-friendlysulfuric sulfuric acid aluminium slag building block, method includes the following steps:
(1) aluminium sulfate slag is dry, grinding, sieving obtains aluminium sulfate slag powder;
(2) by high calcium Desulphurization grinding, sieving obtains high calcium Desulphurization powder;
(3) aluminium sulfate slag powder and high calcium Desulphurization powder are mixed, water is added, is stirred, obtains environment-friendly type Aluminium sulfate slag builds filler;
(4) mixture in step (3) after stirring is subjected to forming processes, then conserves, obtains Environment-friendlysulfuric sulfuric acid Aluminium slag building block.
Preferably, the additional amount of each component are as follows: aluminium sulfate slag 40-70 parts by weight, preferably 42-68 parts by weight, into one Step is preferably 45-65 parts by weight, more preferably 50-60 parts by weight;High calcium Desulphurization 30-60 parts by weight, preferably 32-58 weight Part, further preferably 35-55 parts by weight, more preferably 40-50 parts by weight.The amount that water is added in step (3) is control environmental protection Type aluminium sulfate slag builds the ratio of mud of filler for 0.4-0.7, preferably 0.45-0.65, further preferably 0.5-0.625, more Preferably 0.525-0.6.
Preferably, step (1) specifically: aluminium sulfate slag is placed in drying box and is dried, drying temperature is 100-140 DEG C (preferably 105-130 DEG C, more preferably 110-120 DEG C), drying time be 12-48h (preferably 18-36h, more Preferably 20-28h);Then grinding is carried out by ball mill, the revolving speed of ball mill is 20-1000r/s (preferably 50-500r/ S, more preferably 80-200r/s), grinding time is 10-120min (preferably 20-90min, more preferably 30-60min), mistake Sieve processing (preferably uses the round-hole mesh of 0.01-1mm, further preferably uses the round-hole mesh of 0.1-0.8mm, more preferably use The round-hole mesh of 0.2-0.5mm), obtain aluminium sulfate slag powder.
Preferably, step (2) specifically: high calcium Desulphurization is carried out grinding by ball mill, the revolving speed of ball mill is 20-1000r/s (preferably 50-500r/s, more preferably 80-200r/s), grinding time are 10-120min (preferably 20- 90min, more preferably 30-60min), sieving processing (preferably uses the round-hole mesh of 0.01-1mm, further preferably uses 0.1- The round-hole mesh of 0.8mm more preferably uses the round-hole mesh of 0.2-0.5mm), obtain high calcium Desulphurization powder.
Preferably, the mixing time in step (3) is 1-20min, preferably 2-10min, more preferably 3-5min.
Preferably, step (4) forming processes are to pour or squeeze, the curing time is 2-72d, preferably 6- 60d, more preferably 12-48d.
Technical solution provided by the invention is simple, is cleverly mixed using two kinds of waste residues, adjusts sulphur using high calcium Desulphurization The pH value of acidic aluminium slag reaches cured purpose.Meanwhile it is remaining in calcium component, with aluminium sulfate slag using containing in high calcium Desulphurization Soluble silicon and aluminium reacted, containing calcium component become calcium hydroxide as in alkali-activator, with aluminium sulfate slag it is effective at Divide and reacted, generates the mixture with intensity such as hydrated calcium silicate gel, drated calcium aluminate gel and entringite, the mixing Object may be used as building filler or building block be made.
High calcium Desulphurization neutralisation of sulphuric acid aluminium slag, so that the filler prepared avoids aluminium sulfate slag to environment at alkalinity Pollution;Meanwhile using calcium hydroxide remaining in high calcium Desulphurization as alkali-activator, remaining solubility in aluminium sulfate slag Silicon and aluminium are raw material, by way of mixing, to generate intensity, and are applied in architectural engineering.The present invention not only solves High calcium Desulphurization and aluminium sulfate slag disposition amount is few and the situation of environmental pollution, and the filler prepared has won economic effect Benefit: reduce the cost of disposal of solid waste.
Compared with prior art, technical solution of the present invention has the advantages that
1, the pollution-free a large amount of aluminum sulfate of processing, while the filler of build environment friendly, have complied with leading for national policy To, and certain economic benefit is brought for enterprise;
2, the present invention does not need to add other additives and increase cost, and two kinds of materials reach to being Industrial Solid Waste The purpose of the treatment of wastes with processes of wastes against one another;
3, alkali-activated carbonatite is carried out using high calcium Desulphurization, and is not necessarily to carry out calcination processing, improve the utilization rate of Industrial Solid Waste, The energy has been saved, production cost is reduced;
4, operation of the present invention is simple, and the pH value of aluminium sulfate slag is adjusted by Desulphurization, reaches pollution-free processing, and the two is mixed Conjunction can generate intensity.
Detailed description of the invention
Fig. 1 is the flow chart for the production method that Environment-friendlysulfuric sulfuric acid aluminium slag of the present invention builds filler;
Fig. 2 is the flow chart of the production method of Environment-friendlysulfuric sulfuric acid aluminium slag building block of the present invention.
Specific embodiment
According to the first embodiment of the present invention, a kind of Environment-friendlysulfuric sulfuric acid aluminium slag building filler is provided:
A kind of Environment-friendlysulfuric sulfuric acid aluminium slag building filler, which includes following components: aluminium sulfate slag 40-70 weight Part, high calcium Desulphurization 30-60 parts by weight, water 35-85 parts by weight;Aluminium sulfate slag and high calcium Desulphurization mix by stirring, and are formed Filler mixture.
Preferably, the building filler includes following components: aluminium sulfate slag 42-68 parts by weight, high calcium Desulphurization 32-58 weight Measure part, water 37-80 parts by weight;Aluminium sulfate slag and high calcium Desulphurization mix by stirring, and form filler mixture.
Preferably, the building filler includes following components: aluminium sulfate slag 45-65 parts by weight, high calcium Desulphurization 35-55 weight Measure part, water 40-75 parts by weight;Aluminium sulfate slag and high calcium Desulphurization mix by stirring, and form filler mixture.
Preferably, the building filler includes following components: aluminium sulfate slag 50-60 parts by weight, high calcium Desulphurization 40-50 weight Measure part, water 45-70 parts by weight;Aluminium sulfate slag and high calcium Desulphurization mix by stirring, and form filler mixture.
Preferably, the partial size of the aluminium sulfate slag be 0.01-1mm, preferably 0.1-0.8mm, further preferably 0.2-0.5mm, more preferably 0.25-0.4mm.
Preferably, the partial size of the high calcium Desulphurization be 0.01-1mm, preferably 0.1-0.8mm, further preferably 0.2-0.5mm, more preferably 0.25-0.4mm.
According to the second embodiment of the present invention, a kind of production method of Environment-friendlysulfuric sulfuric acid aluminium slag building filler is provided:
Environmental protection described in any one of a kind of production method of Environment-friendlysulfuric sulfuric acid aluminium slag building filler or preparation claim 1-5 The method that type aluminium sulfate slag builds filler, method includes the following steps:
(1) aluminium sulfate slag is dry, grinding, sieving obtains aluminium sulfate slag powder;
(2) by high calcium Desulphurization grinding, sieving obtains high calcium Desulphurization powder;
(3) aluminium sulfate slag powder and high calcium Desulphurization powder are mixed, water is added, is stirred, obtains environment-friendly type Aluminium sulfate slag builds filler.
According to the third embodiment the present invention, a kind of production method of Environment-friendlysulfuric sulfuric acid aluminium slag building block is provided:
A kind of production method of Environment-friendlysulfuric sulfuric acid aluminium slag building block, method includes the following steps:
(1) aluminium sulfate slag is dry, grinding, sieving obtains aluminium sulfate slag powder;
(2) by high calcium Desulphurization grinding, sieving obtains high calcium Desulphurization powder;
(3) aluminium sulfate slag powder and high calcium Desulphurization powder are mixed, water is added, is stirred, obtains environment-friendly type Aluminium sulfate slag builds filler;
(4) mixture in step (3) after stirring is subjected to forming processes, then conserves, obtains Environment-friendlysulfuric sulfuric acid Aluminium slag building block.
Preferably, the additional amount of each component are as follows: aluminium sulfate slag 40-70 parts by weight, preferably 42-68 parts by weight, into one Step is preferably 45-65 parts by weight, more preferably 50-60 parts by weight;High calcium Desulphurization 30-60 parts by weight, preferably 32-58 weight Part, further preferably 35-55 parts by weight, more preferably 40-50 parts by weight;The amount that water is added in step (3) is control environmental protection Type aluminium sulfate slag builds the ratio of mud of filler for 0.4-0.7, preferably 0.45-0.65, further preferably 0.5-0.625, more Preferably 0.525-0.6.
Preferably, step (1) specifically: aluminium sulfate slag is placed in drying box and is dried, drying temperature is 100-140 DEG C (preferably 105-130 DEG C, more preferably 110-120 DEG C), drying time be 12-48h (preferably 18-36h, more Preferably 20-28h);Then grinding is carried out by ball mill, the revolving speed of ball mill is 20-1000r/s (preferably 50-500r/ S, more preferably 80-200r/s), grinding time is 10-120min (preferably 20-90min, more preferably 30-60min), mistake Sieve processing (preferably uses the round-hole mesh of 0.01-1mm, further preferably uses the round-hole mesh of 0.1-0.8mm, more preferably use The round-hole mesh of 0.2-0.5mm), obtain aluminium sulfate slag powder.
Preferably, step (2) specifically: high calcium Desulphurization is carried out grinding by ball mill, the revolving speed of ball mill is 20-1000r/s (preferably 50-500r/s, more preferably 80-200r/s), grinding time are 10-120min (preferably 20- 90min, more preferably 30-60min), sieving processing (preferably uses the round-hole mesh of 0.01-1mm, further preferably uses 0.1- The round-hole mesh of 0.8mm more preferably uses the round-hole mesh of 0.2-0.5mm), obtain high calcium Desulphurization powder.
Preferably, the mixing time in step (3) is 1-20min, preferably 2-10min, more preferably 3-5min.
Preferably, step (4) forming processes are to pour or squeeze, the curing time is 2-72d, preferably 6- 60d, more preferably 12-48d.
Embodiment 1
A kind of production method of Environment-friendlysulfuric sulfuric acid aluminium slag building filler, method includes the following steps:
(1) aluminium sulfate slag is dry, grinding, sieving obtains aluminium sulfate slag powder;
(2) by high calcium Desulphurization grinding, sieving obtains high calcium Desulphurization powder;
(3) aluminium sulfate slag powder and high calcium Desulphurization powder are mixed, water is added, is stirred, obtains environment-friendly type Aluminium sulfate slag builds filler.
Embodiment 2
A kind of production method of Environment-friendlysulfuric sulfuric acid aluminium slag building block, method includes the following steps:
(1) aluminium sulfate slag being placed in drying box and is dried, then carry out grinding by ball mill, sieving is handled, Obtain aluminium sulfate slag powder;
(2) high calcium Desulphurization is subjected to grinding by ball mill, sieving processing obtains high calcium Desulphurization powder;
(3) aluminium sulfate slag powder and high calcium Desulphurization powder are mixed, water is added, is stirred, obtains environment-friendly type Aluminium sulfate slag builds filler;
(4) mixture in step (3) after stirring is subjected to forming processes, then conserves, obtains Environment-friendlysulfuric sulfuric acid Aluminium slag building block.
It carries out experiment according to the method for embodiment 2, and non-confining strength is carried out to the building block for not stopping curing time Degree detection.Meanwhile water stability test is carried out to the building block after maintenance 28 days, then calculate the loss of strength rate of building block.
Water stability test: the building block sample after maintenance 28 days detects its compression strength, the test specimen resistance to compression before being recorded as immersion Intensity P0;Then by 24 hours in the building block sample soaking water, naturally dry is taken out, then impregnates 24 hours, dries in the air again again It is dry, intensity test is carried out to it again, is recorded as test specimen compression strength P after drying and watering cycle twice1, according to following formula meter Calculate loss of strength rate:
Loss of strength rate=(test specimen compression strength P after drying and watering cycle twice1Test specimen compression strength P before immersion0)/(leaching Test specimen compression strength P before water0) * 100%.
It is shown experimentally that, only controls the mixed proportion of aluminium sulfate slag and high calcium Desulphurization, and only control together The pH value of the ratio of mud, the building filler prepared could solve the problems such as aluminium sulfate slag brings environmental pollution at alkalinity;And The building block prepared possesses preferable compression strength, while ensure that loss of strength rate.

Claims (10)

1. a kind of Environment-friendlysulfuric sulfuric acid aluminium slag builds filler, it is characterised in that: the building filler includes following components:
Aluminium sulfate slag 40-70 parts by weight, high calcium Desulphurization 30-60 parts by weight, water 35-85 parts by weight;
Aluminium sulfate slag and high calcium Desulphurization mix by stirring, and form filler mixture.
2. Environment-friendlysulfuric sulfuric acid aluminium slag according to claim 1 builds filler, it is characterised in that: the building filler includes following Component:
Aluminium sulfate slag 42-68 parts by weight, high calcium Desulphurization 32-58 parts by weight, water 37-80 parts by weight;
Aluminium sulfate slag and high calcium Desulphurization mix by stirring, and form filler mixture.
3. Environment-friendlysulfuric sulfuric acid aluminium slag according to claim 1 builds filler, it is characterised in that: the building filler includes following Component:
Aluminium sulfate slag 45-65 parts by weight, high calcium Desulphurization 35-55 parts by weight, water 40-75 parts by weight;
Aluminium sulfate slag and high calcium Desulphurization mix by stirring, and form filler mixture.
4. Environment-friendlysulfuric sulfuric acid aluminium slag according to claim 1 builds filler, it is characterised in that: the building filler includes following Component:
Aluminium sulfate slag 50-60 parts by weight, high calcium Desulphurization 40-50 parts by weight, water 45-70 parts by weight;
Aluminium sulfate slag and high calcium Desulphurization mix by stirring, and form filler mixture.
5. Environment-friendlysulfuric sulfuric acid aluminium slag described in any one of -4 builds filler according to claim 1, it is characterised in that: the sulfuric acid The partial size of aluminium slag is 0.01-1mm, preferably 0.1-0.8mm, further preferably 0.2-0.5mm, more preferably 0.25- 0.4mm;And/or
The partial size of the high calcium Desulphurization be 0.01-1mm, preferably 0.1-0.8mm, further preferably 0.2-0.5mm, it is more excellent It is selected as 0.25-0.4mm.
6. environment-friendly type described in any one of a kind of production method of Environment-friendlysulfuric sulfuric acid aluminium slag building filler or preparation claim 1-5 The method that aluminium sulfate slag builds filler, method includes the following steps:
(1) aluminium sulfate slag is dry, grinding, sieving obtains aluminium sulfate slag powder;
(2) by high calcium Desulphurization grinding, sieving obtains high calcium Desulphurization powder;
(3) aluminium sulfate slag powder and high calcium Desulphurization powder are mixed, water is added, is stirred, obtains Environment-friendlysulfuric sulfuric acid Aluminium slag builds filler.
7. a kind of production method of Environment-friendlysulfuric sulfuric acid aluminium slag building block, method includes the following steps:
(1) aluminium sulfate slag is dry, grinding, sieving obtains aluminium sulfate slag powder;
(2) by high calcium Desulphurization grinding, sieving obtains high calcium Desulphurization powder;
(3) aluminium sulfate slag powder and high calcium Desulphurization powder are mixed, water is added, is stirred, obtains Environment-friendlysulfuric sulfuric acid Aluminium slag builds filler;
(4) mixture in step (3) after stirring is subjected to forming processes, then conserves, obtains Environment-friendlysulfuric sulfuric acid aluminium slag Building block.
8. method according to claim 6 or 7, it is characterised in that: the additional amount of each component are as follows:
Aluminium sulfate slag 40-70 parts by weight, preferably 42-68 parts by weight, further preferably 45-65 parts by weight, more preferably 50- 60 parts by weight;
High calcium Desulphurization 30-60 parts by weight, preferably 32-58 parts by weight, further preferably 35-55 parts by weight, more preferably 40-50 parts by weight;
It is 0.4-0.7 that the amount of addition water, which is the ratio of mud of control environment-friendly type aluminium sulfate slag building filler, in step (3), preferably 0.45-0.65, further preferably 0.5-0.625, more preferably 0.525-0.6.
9. method a method according to any one of claims 6-8, it is characterised in that: step (1) specifically: put aluminium sulfate slag It being placed in drying box and is dried, drying temperature is 100-140 DEG C (preferably 105-130 DEG C, more preferably 110-120 DEG C), Drying time is 12-48h (preferably 18-36h, more preferably 20-28h);Then grinding is carried out by ball mill, ball mill Revolving speed be 20-1000r/s (preferably 50-500r/s, more preferably 80-200r/s), grinding time be 10-120min (preferably For 20-90min, more preferably 30-60min), sieving processing (preferably uses the round-hole mesh of 0.01-1mm, further preferably uses The round-hole mesh of 0.1-0.8mm more preferably uses the round-hole mesh of 0.2-0.5mm), obtain aluminium sulfate slag powder;And/or
Step (2) specifically: high calcium Desulphurization is subjected to grinding by ball mill, the revolving speed of ball mill is that 20-1000r/s is (excellent Be selected as 50-500r/s, more preferably 80-200r/s), grinding time be 10-120min (preferably 20-90min, more preferably 30-60min), sieving processing (preferably use 0.01-1mm round-hole mesh, further preferably use 0.1-0.8mm round-hole mesh, More preferably use the round-hole mesh of 0.2-0.5mm), obtain high calcium Desulphurization powder.
10. the method according to any one of claim 6-9, it is characterised in that: the mixing time in step (3) is 1- 20min, preferably 2-10min, more preferably 3-5min;And/or
Step (4) forming processes be pour or squeeze, the curing time be 2-72d, preferably 6-60d, more preferably 12-48d。
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