CN105985084A - Gypsum hollow block and semi-dry production method of same - Google Patents

Gypsum hollow block and semi-dry production method of same Download PDF

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Publication number
CN105985084A
CN105985084A CN201510041740.4A CN201510041740A CN105985084A CN 105985084 A CN105985084 A CN 105985084A CN 201510041740 A CN201510041740 A CN 201510041740A CN 105985084 A CN105985084 A CN 105985084A
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China
Prior art keywords
gypsum
hollow block
water
plaster
gypsum hollow
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CN201510041740.4A
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Chinese (zh)
Inventor
张庚福
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ANHUI SENKE NEW MATERIAL Co Ltd
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ANHUI SENKE NEW MATERIAL Co Ltd
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Priority to CN201510041740.4A priority Critical patent/CN105985084A/en
Publication of CN105985084A publication Critical patent/CN105985084A/en
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Abstract

The invention provides a gypsum hollow block which is composed of, by weight, 80-90 parts of building gypsum powder, 10-20 parts of fly ash, 0.2-0.5 parts of a water reducing agent, 0.6-0.8 parts of a retarder, 0.1-0.2 parts of methylcellulose, 0.2-0.3 parts of carboxymethylcellulose, and 1-2 parts of an activator. The weight ratio of water to the building gypsum powder is 0.3-0.4:1 and the temperature of water is 5-25 DEG C. A semi-dry production method of the gypsum hollow block includes the steps of: 1) high-speed-stirring the mixture of the mixed powder and water in a stirrer at 500-600 r/min to obtain a semi-dry method gypsum colloid; and 2) uniformly distributing the material into a combined die cavity in a gypsum hollow block moulding machine through a gypsum mortar transporting apparatus, moulding the hollow block under external pressure, and pushing the hollow block out from the die cavity in a hydraulic manner. The gypsum hollow block has low water-gypsum ratio and is very low in free water content when being moulded, so that the gypsum hollow block can be used for building a wall in a construction side just after the hollow block is moulded, thereby saving a stack yard and avoiding a drying step (natural or artificial drying).

Description

Gypsum hollow block and Semi-dry process method thereof
Technical field
The invention belongs to building building-block production technical field, be specifically related to a kind of gypsum hollow and build Block and Semi-dry process method thereof.
Background technology
In prior art, building wall material mainly has: coal hacking, fired common brick, aerated-block brick, General chemistry gypsum block, air-entrained concrete building block, pearl shale hollow building block and cement hollow building blocks etc.. For easy construction, reaching the purpose of insulation, sound insulation, energy efficiency, the building-block of various structures meets the tendency And give birth to.For guaranteeing the mobility of the land plaster in machinery production and the mixture of water, the inner wall of building body of production The general water of gypsum hollow block is 0.8-0.9:1 with the weight ratio (i.e. water paste ratio) of gypsum, some gypsum (as Titanium gypsum) the weight of gypsum and water than even up to 110-120:1.(only remove gypsum crystallization water requirement It is about 18.62%), unnecessary Free water (being more than more than 60%) causes that dry amount is big, cost big, the cycle Long and that stockyard is big problem, constrains the development of gypsum hollow block.
Content of the invention
For solving the technical problem that above-mentioned prior art exists, the present invention propose a kind of gypsum hollow block and Semi-dry process method, the gypsum hollow block water paste ratio that this production method produces is low, after gypsum block shaping Free water is very low, can deliver to job site and directly build a wall after shaping, saves stockyard, exempts dry (nature And artificial drying), reduce production cost, and the gypsum hollow block water paste ratio being produced by the method be low, Product quality requires far above gypsum block JC/698-2010 standard.
A kind of gypsum hollow block, is made up of the raw material of following parts by weight:
Plaster of Paris powder: 80-90 part, flyash: 10-20 part, water reducer: 0.2-0.5 part, retarder: 0.6-0.8 part, methylcellulose: 0.1-0.2 part, carboxymethylcellulose calcium: 0.2-0.3 part, exciting agent: 1-2 Part;Wherein, the weight of water and plaster of Paris powder is than for 0.3-0.4:1, and the temperature of water is 5-25 DEG C.
Further, the raw material preparing described plaster of Paris powder is desulfurated plaster, titanium gypsum, fluorgypsum or phosphorus Gypsum.
Further, described water reducer is naphthalenesulfonate formaldehyde condensation compound.
Further, one in quick lime, slag and cement for the described exciting agent.
Further, described retarder is citric acid.
A kind of gypsum hollow block Semi-dry process method, comprises the following steps:
1) according to the weight of water and plaster of Paris powder than the water preparing 5-25 DEG C for 0.3-0.4:1, then according to Parts by weight are slowly added to methylcellulose and 0.2-0.3 part carboxymethylcellulose calcium of 0.1-0.2 part, at methyl Cellulose, with carboxymethylcellulose calcium fusion process, adds the exciting agent of 1-2 part weight portion, stirs simultaneously, Obtain aqueous mixtures;
2) 0.6-0.8 part retarder, 0.2-0.5 part water reducer, 10-20 part flyash are weighed according to parts by weight And 80-90 part plaster of Paris powder mixes, obtain mixed powder;
3) by step 2) mixed powder and step 1) aqueous mixtures joins and carries out high-speed stirring in mixer Mixing, mixing speed is 500-600r/min, obtains semidry method gypsum colloid, then by gypsum mortar conveying dress Putting uniform distribution in gypsum hollow block forming machine built up cavity, outer molded, then hydraulic top goes out die cavity, Obtain gypsum hollow block.
Further, the temperature of described water is 10-20 DEG C, and the raw material preparing described plaster of Paris powder is desulfurization stone Cream, titanium gypsum, fluorgypsum or ardealite.
Further, described water reducer is naphthalenesulfonate formaldehyde condensation compound, and described exciting agent is selected from quick lime, ore deposit One in slag and cement, described retarder selected from organic acid, organic acid soluble salt, alkaline phosphate and One or more in protein.
Further, described retarder is citric acid.
The method have the benefit that
1), the gypsum hollow block water paste ratio of the present invention is that 0.3-0.4:1 meets gypsum block JC/698-2010 Standard requires, the water paste ratio that the proper flow degree of usual slurry needs is typically at 0.8-0.9:1, and some gypsum The water paste ratio of (such as titanium gypsum) is even up to 110-120:1, removes the water requirement (only 18.62% of gypsum crystallization Left and right), excessive moisture too many (about more than 60%), need to be dried, therefore take that stockyard is big, cost is high, Constrain the development of gypsum hollow block.The water paste ratio 0.3-0.4:1 of the present invention, the removing crystallization water and permission Free water, gypsum block can be dispatched from the factory after being molded two hours.
2), the gypsum hollow block breaking load 6-8KN of the present invention, is much larger than standard 2KN.
3), methylcellulose and carboxymethylcellulose calcium composite gelled material primarily serve the purpose of and strengthen gypsum colloid Viscosity.Semidry method gypsum aquation as condensing hardening process and common gypsum aquation and condensing principle, water with The mixing aquation of gypsum must make water be combined rapidly aquation with plaster of Paris powder by high speed, strong stirring. Aquation is the premise condensing hardening, does not has aquation to be impossible to condense hardening.During aquation nucleus formation and Grow closely related with degree of supersaturation.But, half water law is low because of water paste ratio, and nucleus and Crystallization are relatively slow, And the operating time producing with routine during half water law gypsum block machinery production is quite, intensity can not meet liquid Bear down on one and rise and the carrying external force of conveying robot, it is necessary to increase the cohesive force between the colloid not forming crystal, make Will not damaged colloid under external force, it has been found that add methylcellulose and carboxymethylcellulose calcium strengthens viscosity, with Make up intensity not enough, thus meet quick Production requirement.
Detailed description of the invention
Embodiment 1
A kind of gypsum hollow block Semi-dry process method, comprises the following steps:
1) prepare the water 24Kg of 5 DEG C, be then slowly added into methylcellulose and the 0.2Kg carboxylic first of 0.1Kg Base cellulose, in methylcellulose with carboxymethylcellulose calcium fusion process, adds the quick lime of 1Kg, with When stir, obtain aqueous mixtures;
2) 0.6Kg citric acid, 0.2Kg naphthalenesulfonate formaldehyde condensation compound, 10Kg flyash and desulfurization are weighed The plaster of Paris powder 80Kg that gypsum is prepared mixes, and obtains mixed powder;
3) by step 2) mixed powder and step 1) aqueous mixtures joins and carries out high-speed stirring in mixer Mixing, mixing speed is 500-600r/min, obtains semidry method gypsum colloid, then by gypsum mortar conveying dress Putting uniform distribution in gypsum hollow block forming machine built up cavity, outer molded, then hydraulic top goes out die cavity, Obtain gypsum hollow block.
Measure the present embodiment gypsum hollow block breaking load 6KN according to JC/698-2010;Water paste ratio is 0.3:1。
Embodiment 2
A kind of gypsum hollow block Semi-dry process method, comprises the following steps:
1) prepare the water 27Kg of 10 DEG C, be then slowly added into methylcellulose and the 0.3Kg carboxylic of 0.2Kg Methylcellulose, in methylcellulose with carboxymethylcellulose calcium fusion process, adds the slag of 1.5Kg, Stir simultaneously, obtain aqueous mixtures;
2) 0.8Kg citric acid, 0.4Kg naphthalenesulfonate formaldehyde condensation compound, 15Kg flyash and titanium stone are weighed The plaster of Paris powder 90Kg that cream is prepared mixes, and obtains mixed powder;
3) by step 2) mixed powder and step 1) aqueous mixtures joins and carries out high-speed stirring in mixer Mixing, mixing speed is 500-600r/min, obtains semidry method gypsum colloid, then by gypsum mortar conveying dress Putting uniform distribution in gypsum hollow block forming machine built up cavity, outer molded, then hydraulic top goes out die cavity, Obtain gypsum hollow block.
Measure the present embodiment gypsum hollow block breaking load 7KN according to JC/698-2010;Water paste ratio is 0.3:1。
Embodiment 3
A kind of gypsum hollow block Semi-dry process method, comprises the following steps:
1) prepare the water 36Kg of 20 DEG C, be then slowly added into methylcellulose and the 0.2Kg carboxylic of 0.15Kg Methylcellulose, in methylcellulose with carboxymethylcellulose calcium fusion process, adds the cement of 2Kg, with When stir, obtain aqueous mixtures;
2) 0.7Kg citric acid, 0.5Kg naphthalenesulfonate formaldehyde condensation compound, 20Kg flyash and phosphorus stone are weighed Cream production is prepared plaster of Paris powder 90Kg and mixes, and obtains mixed powder;
3) by step 2) mixed powder and step 1) aqueous mixtures joins and carries out high-speed stirring in mixer Mixing, mixing speed is 500-600r/min, obtains semidry method gypsum colloid, then by gypsum mortar conveying dress Putting uniform distribution in gypsum hollow block forming machine built up cavity, outer molded, then hydraulic top goes out die cavity, Obtain gypsum hollow block.
Measure the present embodiment gypsum hollow block breaking load 8KN according to JC/698-2010;Water paste ratio is 0.4:1。
Embodiment 4
A kind of gypsum hollow block Semi-dry process method, comprises the following steps:
1) prepare the water 34Kg of 25 DEG C, be then slowly added into methylcellulose and the 0.2Kg carboxylic of 0.2Kg Methylcellulose, in methylcellulose with carboxymethylcellulose calcium fusion process, adds the slag of 1.5Kg, Stir simultaneously, obtain aqueous mixtures;
2) 0.7Kg citric acid, 0.4Kg naphthalenesulfonate formaldehyde condensation compound, 15Kg flyash and fluorite are weighed The plaster of Paris powder 85Kg that cream is prepared mixes, and obtains mixed powder;
3) by step 2) mixed powder and step 1) aqueous mixtures joins and carries out high-speed stirring in mixer Mixing, mixing speed is 500-600r/min, obtains semidry method gypsum colloid, then by gypsum mortar conveying dress Putting uniform distribution in gypsum hollow block forming machine built up cavity, outer molded, then hydraulic top goes out die cavity, Obtain gypsum hollow block.
Measure the present embodiment gypsum hollow block breaking load 8KN according to JC/698-2010;Water paste ratio is 0.4:1。
The foregoing is only presently preferred embodiments of the present invention, not in order to limit the present invention, all at this Within bright spirit and principle, any modification, equivalent substitution and improvement etc. made, should be included in this Within bright protection domain.

Claims (9)

1. a gypsum hollow block, it is characterised in that be made up of the raw material of following parts by weight:
Plaster of Paris powder: 80-90 part, flyash: 10-20 part, water reducer: 0.2-0.5 part, retarder: 0.6-0.8 part, methylcellulose: 0.1-0.2 part, carboxymethylcellulose calcium: 0.2-0.3 part, exciting agent: 1-2 Part;Wherein, the weight of water and plaster of Paris powder is than for 0.3-0.4:1, and the temperature of water is 5-25 DEG C.
2. gypsum hollow block according to claim 1, it is characterised in that prepare described plaster of Paris The raw material of powder is desulfurated plaster, titanium gypsum, fluorgypsum or ardealite.
3. gypsum hollow block according to claim 1, it is characterised in that described water reducer is naphthalene sulphur Hydrochlorate formaldehyde condensation products.
4. gypsum hollow block according to claim 1, it is characterised in that described exciting agent is selected from life One in lime, slag and cement.
5. gypsum hollow block according to claim 1, it is characterised in that described retarder is lemon Acid.
6. a gypsum hollow block Semi-dry process method, it is characterised in that comprise the following steps:
1) according to the weight of water and plaster of Paris powder than the water preparing 5-25 DEG C for 0.3-0.4:1, then according to Parts by weight are slowly added to methylcellulose and 0.2-0.3 part carboxymethylcellulose calcium of 0.1-0.2 part, at methyl Cellulose, with carboxymethylcellulose calcium fusion process, adds the exciting agent of 1-2 part weight portion, stirs simultaneously, Obtain aqueous mixtures;
2) 0.6-0.8 part retarder, 0.2-0.5 part water reducer, 10-20 part flyash are weighed according to parts by weight And 80-90 part plaster of Paris powder mixes, obtain mixed powder;
3) by step 2) mixed powder and step 1) aqueous mixtures joins and carries out high-speed stirring in mixer Mixing, mixing speed is 500-600r/min, obtains semidry method gypsum colloid, then by gypsum mortar conveying dress Putting uniform distribution in gypsum hollow block forming machine built up cavity, outer molded, then hydraulic top goes out die cavity, Obtain gypsum hollow block.
7. gypsum hollow block Semi-dry process method according to claim 6, it is characterised in that institute The temperature stating water is 10-20 DEG C, and the raw material preparing described plaster of Paris powder is desulfurated plaster, titanium gypsum, fluorine Gypsum or ardealite.
8. gypsum hollow block Semi-dry process method according to claim 6, it is characterised in that institute Stating water reducer is naphthalenesulfonate formaldehyde condensation compound, and described exciting agent is selected from quick lime, slag and cement Kind, one in organic acid, organic acid soluble salt, alkaline phosphate and protein for the described retarder Or it is multiple.
9. gypsum hollow block Semi-dry process method according to claim 8, it is characterised in that institute Stating retarder is citric acid.
CN201510041740.4A 2015-01-27 2015-01-27 Gypsum hollow block and semi-dry production method of same Pending CN105985084A (en)

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106478038A (en) * 2016-10-09 2017-03-08 合肥广能新材料科技有限公司 Fluorgypsum building block and preparation method thereof
CN106495631A (en) * 2016-10-09 2017-03-15 合肥广能新材料科技有限公司 Ardealite block and preparation method thereof
CN107352933A (en) * 2017-06-05 2017-11-17 南充市高坪区江峰石膏有限公司 A kind of light-weight building gypsum block and its production method

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101597937A (en) * 2009-07-07 2009-12-09 贵州金三利科技建材有限公司 Retarded water-resistant gypsum block and preparation method thereof
CN101648412A (en) * 2008-08-14 2010-02-17 方承仕 Method for producing gypsum building products by pressing process
CN101920520A (en) * 2010-08-18 2010-12-22 攀钢集团钢铁钒钛股份有限公司 Method for preparing gypsum building block with titanium gypsum
CN102701698A (en) * 2012-06-20 2012-10-03 安徽森科新材料有限公司 Moistureproof titanium gypsum hollow building block and preparation method thereof

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101648412A (en) * 2008-08-14 2010-02-17 方承仕 Method for producing gypsum building products by pressing process
CN101597937A (en) * 2009-07-07 2009-12-09 贵州金三利科技建材有限公司 Retarded water-resistant gypsum block and preparation method thereof
CN101920520A (en) * 2010-08-18 2010-12-22 攀钢集团钢铁钒钛股份有限公司 Method for preparing gypsum building block with titanium gypsum
CN102701698A (en) * 2012-06-20 2012-10-03 安徽森科新材料有限公司 Moistureproof titanium gypsum hollow building block and preparation method thereof

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106478038A (en) * 2016-10-09 2017-03-08 合肥广能新材料科技有限公司 Fluorgypsum building block and preparation method thereof
CN106495631A (en) * 2016-10-09 2017-03-15 合肥广能新材料科技有限公司 Ardealite block and preparation method thereof
CN107352933A (en) * 2017-06-05 2017-11-17 南充市高坪区江峰石膏有限公司 A kind of light-weight building gypsum block and its production method

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