CN1259272C - High-strength phosphogypoum building block and preparation method - Google Patents
High-strength phosphogypoum building block and preparation method Download PDFInfo
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- CN1259272C CN1259272C CNB021132585A CN02113258A CN1259272C CN 1259272 C CN1259272 C CN 1259272C CN B021132585 A CNB021132585 A CN B021132585A CN 02113258 A CN02113258 A CN 02113258A CN 1259272 C CN1259272 C CN 1259272C
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- building block
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- phosphogypsum
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- Y—GENERAL 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
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
- Y02W30/91—Use of waste materials as fillers for mortars or concrete
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Abstract
The present invention relates to a high-strength phosphogypsum building block and a preparation method thereof. The main raw material of the building block is phosphogypsum which is waste in the production of phosphate fertilizer, and other raw materials are a non-activating compounding agent, an activating compounding agent, an accelerating agent and water. The preparation method of the building block mainly comprises: the raw materials are primarily mixed, processed in digesting reaction mode, mainly mixed, pressed to form, cured by steam, put still to be aired, etc. The building block of the present invention has the advantages of high compressive strength, low volume weight and low production cost. When generalized and implemented, the present invention can solve the problems of land occupation of stacked phosphogypsum (which is waste in the production of phosphate fertilizer) and pollution and also solve the problems of cultivated land damage and atmospherical environment pollution existing in the production of traditional building bricks; the present invention has favorable economic benefit and social benefit.
Description
One, technical field
The present invention relates to assemble the building brick that construction wall uses or the technical field of other building blocks, particularly relating to the waste material phosphogypsum in the production of phosphate fertilizer is the technical field of the building block of main raw material.
Two, background technology
Along with development and national economy, the raising of people's income level, the requirement that people improve housing condition also just puts forward thereupon, and this has promoted the development of house property industry also just for the development of house property construction industry provides opportunity.The house property construction needs a large amount of building blocks as the building construction basic material, comprises standard brick and other forms of building block.Traditional building block mainly is to be that raw material is made with the clay.The mass production of building block can lose a lot of arable lands, causes people to rely the cultivated area according to existence to reduce.In addition, in the production process of building block, can produce volume of smoke, atmosphere pollution.Because the use of traditional architecture building block and production can bring the harm to people's living space, therefore, a lot of in the world national government are formulated the production and the use of policies and regulations restriction traditional architecture building block, encourage the building block that substitutes of exploitation other materials.
On the other hand, along with the increase of population, people are also just increasing to the demand of grain.In order to satisfy the demand of people, need use a large amount of phosphate fertilizer, thereby cause the phosphate fertilizer industrial expansion grain.The production of phosphate fertilizer can produce a large amount of waste material phosphogypsums, need take a lot of soils and stack.The a large amount of production of phosphate fertilizer also can bring pollution and the appropriation of land to environment.
The production of traditional architecture building block and phosphate fertilizer all can produce to the soil occupy and to the pollution of environment, in order to address this problem, it is the research of raw material production building block that people have carried out with the waste material phosphogypsum in the production of phosphate fertilizer, in the hope of both solving the handling problem of waste material phosphogypsum in the phophatic fertilizer production process, can solve the source problem that comes of building block raw materials for production again.Be that the technology of main material production building block mainly contains two kinds with the waste material phosphogypsum in the production of phosphate fertilizer in the prior art, a kind of is that phosphogypsum carries out frying earlier, and then adds industrial waste compression mouldings such as sand or slag by certain proportioning; Another kind is that phosphogypsum is mixed the back compression molding with cement, sand etc.Adopt the building block of these two kinds of fabrication techniques, the ultimate compression strength that technical the most insufficient place is building block is lower, generally only reaches 4.5～7.5MPa, and the intensity quality of product is also unstable, is difficult to adapt to the requirement of modern architecture to material of construction.Just because of the reason of this respect, these technology do not obtain enterprise and social acceptance and approval yet, therefore just are not committed to industrial implementation.
Three, Fa Ming content
At the deficiency of prior art, primary and foremost purpose of the present invention is to provide a kind of ultimate compression strength height to people, and steady quality is the building block of main raw material with the waste material phosphogypsum in the production of phosphate fertilizer.Another object of the present invention is the preparation method that discloses this building block simultaneously to people.By enforcement of the present invention, thereby can realize both having solved the problem of outlet of the waste material phosphogypsum in the production of phosphate fertilizer, solve building block raw material sources problem again.
High-strength phosphogypoum building block disclosed by the invention, the formation of its feed composition and content are: 20～40 parts of phosphogypsums; 5～20 parts of non-activated compound agents: 5～10 parts of promotor; 5～16 parts in water.More than the umber of each component be parts by weight.In order further to improve the ultimate compression strength of building block, also can in the above-mentioned raw materials component, add activated compound agent.Activated compound agent adds manyly more, and the intensity of building block is high more, and corresponding cost also can increase.General add-on is the 0.5-5 weight part.
Said phosphogypsum in the such scheme can be as the phosphogypsum of waste material in the production of phosphate fertilizer.Can certainly adopt other chemical industry by product gypsum, perhaps plaster of paris.But if adopt the more expensive gypsum of price, obviously the production cost of building block can increase, and also is against original intention of the present invention.
Said non-activated compound agent in the such scheme can be sand, slag, titanium slag, phosphorus slag, flyash, silica flour and/or silicon bath soil etc.
Said promotor can be calcium oxide, sodium sulfate, sodium-chlor, vitriolate of tartar and/or potassium oxide etc. in the such scheme.
The activated compound agent that adds in order to improve compression strength of building block can be cement, polyacrylamide resin, coumarone resin and/or polyvinyl alcohol etc.
The add-on of water depends primarily on the water-intake rate of other component solid materialss in the such scheme, and suction is high, and the add-on of water is also just many.
The method for preparing above-mentioned building block can be carried out according to the following steps:
1, the phosphogypsum that will be equipped with in proportion, non-activated compound agent, promotor and the water of half mix;
2, the material after will mixing is sent into the slaking storehouse and is carried out digestion reaction, makes its slaking, improving the reactive behavior of component, and eliminates the oxious component in the phosphogypsum;
3, the water that adds surplus in the material after the digestion reaction slaking stirs, until mixing;
4, the material that mixes is inserted the block forming press, shape compression moulding on request;
5, the steam-curing chamber is sent in the building block of compression moulding and carry out vapor cure, make gypsum crystal aquation infiltration again, the interlaced integral body that together forms improves the ultimate compression strength of building block;
6, the building block that vapor cure is finished is left standstill and is dried, and promptly makes the finished product phosphogypoum building block.
In order to make the higher building block of ultimate compression strength, can in above-mentioned preparation scheme, also can in the material that through digestion reaction is grog, add the activated compound agent of determining by formula rate, after both mix earlier, the water that adds surplus again mixes, to be ready for use on the compression moulding building block.
Because promotor and recombiner are less at the shared ratio of feed product, in order to make them be dispersed in the phosphogypsum more full and uniformly, preferred blending means is earlier with promotor and non-activated compound agent thorough mixing, and the water that adds appropriate amount with phosphogypsum again after it mixes mixes.
Material before it being sent into the steam-cured chamber of steam, preferably leaves standstill for some time after the compression moulding of building block press again, makes to carry out initial reaction between the material, forms reticulated structure, to improve the ultimate compression strength of building block.The immobilized time is long more, reacts abundant more, and effect is also just good more, generally is no less than 2 hours, is generally 5-10 hour.
In such scheme, phosphogypsum, non-activated compound agent, promotor and water mix the speed of back digestion reaction, and the envrionment temperature during with reaction is relevant.The long more reaction of time of reaction is abundant more, generally is no less than 5 hours.
In such scheme, material is when being pressed into building block by press, and its mold pressing intensity generally is not less than 10MPa, is generally 15-80MPa.
In such scheme, the building block of compression moulding is sent into sweating room when steam-cured, and the steam-cured time generally is no less than 2 hours, is generally 2～10 hours, steam-cured indoor vapor pressure, and its absolute pressure is generally 0.1～5MPa (gauge pressure).
Phosphogypoum building block disclosed by the invention, its ultimate compression strength is very high, and this is because the present invention distinctive material component prescription and preparation method produce.The building block of compression moulding is in maintenance processes, the initial reaction of its component makes its constituent materials form reticulated structure, under the effect of promotor, material is proceeded secondary reaction then, forms the crystal of needle prick shape, in hole, intersect mutually, reduce the mean pore size of hole, strengthened reticulated structure greatly, reduced porosity, make structure fine and close more, and the water of unbound state can not arbitrarily be spread.Simultaneously, some has formed semi-hydrated gypsum in the former gypsum, enters the back maintenance stage after steam-cured, and gypsum crystal is aquation and permeating among hole again, and together interlaced, it is as a whole that material is formed, and therefore has very high intensity.
Phosphogypoum building block of the present invention, when building block does not contain activated compound agent, the ultimate compression strength of standard square is generally 6～12MPa, can reach the standard-required of the building brick more than 7.5 grades, when building block contains activated compound agent, the ultimate compression strength of standard square can reach the standard-required of building brick more than 10 grades up to 10-40MPa.Building block of the present invention, not only the ultimate compression strength height can be fit to the requirement of strength of modern architecture industry to building materials, also has the low characteristics of unit weight, and every cubic metre nearly weighs 1400～2200kg, is a kind of ideal novel high-strength building materials.If the present invention obtains promotion and implementation; not only can be building block and opened up new, cheap and have abundant guarantee a to originate raw material; land resources and atmospheric environment have been protected; also handle the outlet that finds a light simultaneously for the waste material phosphogypsum in the production of phosphate fertilizer; turn waste into wealth, also solved the long-term waste material phosphogypsum that perplexs enterprise simultaneously and stacked occupation of land and problem of environmental pollution.Kill two birds with one stone, have good economic benefits and social benefit.
Four, description of drawings
Accompanying drawing 1 is the process flow sheet that the present invention prepares high-strength phosphogypoum building block disclosed by the invention, and building block does not contain the activated compound agent component, and as the phosphogypsum of feed composition, non-activated compound agent and promotor add water in the lump and mixes.
Accompanying drawing 2 is another process flow sheets of the present invention.Building block does not contain the activated compound agent component yet, mixes earlier with promotor as the non-activated compound agent of feed composition, and then adds entry with phosphogypsum and mix.
Accompanying drawing 3 is another process flow sheets of the present invention.Building block contains activated compound agent, and its technical process is on the technical process basis in accompanying drawing 1, and activated compound agent is mixed earlier with material after the digestion reaction slaking, and then adds suitable water and mix.
Accompanying drawing 4 is another process flow sheets again of the present invention.Building block contains activated compound agent, and its technical process is on the technical process basis in accompanying drawing 2, and activated compound agent is mixed earlier with material after the digestion reaction slaking, and then adds suitable water and mix.
In above-mentioned accompanying drawing, recombiner 1 is a non-activated compound agent, and recombiner 2 is an activated compound agent.
Five, embodiment
The shared umber of each component in following examples is parts by weight
Embodiment 1
The high-strength phosphogypoum building block feed composition is: 20 parts of phosphogypsums, 1.5 parts in flyash, 8.5 parts in sand, 1 part in sodium sulfate, 4.3 parts in calcium oxide, 8 parts in water.The preparation method of building block is, above-mentioned solid material is inserted in the whipping appts, adds 1/2nd water gagings and fully stirs, and after mixing, material sent into the slaking storehouse, and material carries out digestion reaction in the process of leaving standstill, make it become grog.The time of digestion reaction is about 10 hours.The material of slaking inserted in the whipping appts again stir, after stirring, be about to material and insert in the mould of block forming press, be pressed into the building block of design shape.The press strengthi of compression moulding is 25MPa.The building block that suppresses was left standstill maintenance earlier 8 hours, and it is fully reacted, and subsequently it was sent into the steam-curing chamber, about 10 hours of maintenance.The pressure of sweating room is about 0.2MPa.After the steam-cured end, it is left standstill dry, be the finished product high-strength phosphogypoum building block that to produce.
Embodiment 2
The feed composition of high-strength phosphogypoum building block is: 40 parts of phosphogypsums, 6.8 parts in flyash, 1.2 parts of phosphorus slags, 5.2 parts in calcium oxide, 5.6 parts in water.Processing method with above-mentioned feedstock production building block is: flyash, phosphorus slag and calcium oxide are after mixing earlier under the dry state, again in phosphogypsum is inserted whipping appts, the water that adds 1/2nd total amounts earlier mixes, treat that sending into the slaking storehouse after mixing of materials evenly carries out digestion reaction, technological process afterwards is identical with embodiment 1.At present embodiment, the processing condition of each operation are: the time of digestion reaction is about 10 hours, and the press strengthi of compression moulding is about 50MPa, leaves standstill after the building block compression moulding about 6 hours, and the pressure of steam-cured chamber is about the 5MPa gauge pressure, and the steam-cured time is about 4 hours.
Embodiment 3
The feed composition of high-strength phosphogypoum building block is: 23 parts of phosphogypsums, 4.5 parts in flyash, 1.2 parts of titanium slags, 3 parts in sand, 4.2 parts of cement, 0.5 part of 5% polyacrylamide resin solution, 4.2 parts in calcium oxide, 5 parts in 1 part in sodium-chlor and water.Processing method with above-mentioned feedstock production building block is: phosphogypsum, flyash, titanium slag, calcium oxide and sodium-chlor are inserted in the whipping appts in the lump, the water that adds 1/2nd amounts stirs, and after mixing, sends into slaking storehouse digestion reaction, reacted the material reaction slaking about 12 hours.The slaking material is mixed earlier with cement, polyacrylamide resin solution, add remaining water after mixing again and mix, send into the compression moulding operation after mixing.Technological process afterwards is identical with embodiment 1.In the present embodiment, the processing condition of each operation are: the press strengthi of compression moulding is about 50MPa, and the time of building block standing and reacting is about 5 hours, and the pressure of steam-cured chamber is about 3MPa, and the steam-cured time is about 6 hours.
Embodiment 4
The feed composition of high-strength phosphogypoum building block is: phosphogypsum is 30 parts, 6.5 parts in flyash, 11.5 parts in sand, 1 part of silica flour, 7.5 parts in calcium oxide, 1.5 parts in sodium sulfate, 0.5 part of polyvinyl alcohol, 6 parts in water.Processing method with above-mentioned feedstock production building block is, earlier flyash, sand, silica flour, calcium oxide, sodium sulfate are carried out premix, together inserting the water that adds half in the whipping appts with phosphogypsum again after mixing mixes, after mixing, again material is sent into slaking storehouse digestion reaction, about 12 hours of digestion reaction.After the material slaking, the material with slaking mixes with polyvinyl alcohol again, and the water of inserting whipping appts adding remainder after mixing again mixes, and sends into the compression moulding operation after mixing.Technological process afterwards is identical with embodiment 1.At present embodiment, the processing condition of each operation are: the press strengthi of compression moulding is about 30MPa, and the time of compression moulding building block standing and reacting is about 8 hours, and the pressure of steam-cured chamber is the 4MPa gauge pressure, and the steam-cured time is about 2 hours.
Claims (10)
1. high-strength phosphogypoum building block, it is characterized in that its feed composition and composition weight umber are: 20～40 parts of phosphogypsums, 5～20 parts of non-activated compound agents, 5～10 parts of promotor, water 5-16 part, described non-activated compound agent is sand, slag, titanium slag, phosphorus slag, flyash, silica flour and/or silicon bath soil, and described promotor is calcium oxide, sodium sulfate, sodium-chlor, vitriolate of tartar and/or potassium oxide.
2. building block according to claim 1 is characterized in that also containing in the feed composition activated compound agent of 0.5～5 parts by weight, and described activated compound agent is cement, polyacrylamide resin, coumarone resin and/or polyvinyl alcohol.
3. preparation method according to claim 1 or 2 described high-strength phosphogypoum building blocks is characterized in that building block is prepared by following step:
(1) phosphogypsum that will be equipped with in proportion, non-activated compound agent, promotor and the water of half mix;
(2) material after mixing carries out digestion reaction, makes the material slaking;
(3) water that adds surplus in the material after the digestion reaction slaking again mixes;
(4) material that mixes is inserted the compression moulding of block forming press;
(5) building block of compression moulding is carried out maintenance with steam;
(6) building block that finishes of vapor cure is left standstill to dry and is promptly made the finished product phosphogypoum building block.
4. building block preparation method according to claim 3 is characterized in that also will adding activated compound agent in the grog material behind digestion reaction and mixing, and the water that adds surplus after mixing again mixes.
5. according to claim 3 or 4 described building block preparation methods, it is characterized in that earlier non-activated compound agent being mixed with promotor, mix with phosphogypsum and water again after mixing.
6. building block preparation method according to claim 5 is characterized in that the building block of firm compression moulding is left standstill earlier, and then carries out vapor cure.
7. building block preparation method according to claim 6 is characterized in that the time of material digestion reaction is no less than 5 hours.
8. building block preparation method according to claim 6, the pressure intensity when it is characterized in that building block compression moulding is not less than 10MPa.
9. building block preparation method according to claim 6 is characterized in that the building block of firm compression moulding is no less than 5 hours leaving standstill earlier, and then carries out vapor cure.
10. building block preparation method according to claim 6 is characterized in that building block is no less than 2 hours with the steam-cured time, and vapor pressure is 0.1-5MPa.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB021132585A CN1259272C (en) | 2002-01-22 | 2002-01-22 | High-strength phosphogypoum building block and preparation method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB021132585A CN1259272C (en) | 2002-01-22 | 2002-01-22 | High-strength phosphogypoum building block and preparation method |
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| Publication Number | Publication Date |
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| CN1433989A CN1433989A (en) | 2003-08-06 |
| CN1259272C true CN1259272C (en) | 2006-06-14 |
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| CNB021132585A Expired - Fee Related CN1259272C (en) | 2002-01-22 | 2002-01-22 | High-strength phosphogypoum building block and preparation method |
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Families Citing this family (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1325421C (en) * | 2005-03-03 | 2007-07-11 | 德阳市智源新材料有限公司 | Environment-protecting high-pressure no-baking ardealite brick and its making process |
| CN100424034C (en) * | 2006-08-25 | 2008-10-08 | 华中科技大学 | Compound bricks of phosphogypsum, and producing method |
| CN100395418C (en) * | 2006-10-20 | 2008-06-18 | 王安全 | Phosphous plaster double-row-hole energy-saving building brick and all-dry production method thereof |
| CN101591161B (en) * | 2008-05-29 | 2012-10-03 | 王福生 | Baking-free building block produced by utilizing nonmetallic waste slag and preparation method |
| CN103360013B (en) * | 2012-04-01 | 2016-01-20 | 贵州中建建筑科研设计院有限公司 | A kind of preparation method of gypsum base thermal insulation mortar |
| CN103058599A (en) * | 2013-01-04 | 2013-04-24 | 朱奎 | Building block |
| CN103058628B (en) * | 2013-01-04 | 2014-11-12 | 叶香竹 | Block produced by using waste slag |
| CN104891919A (en) * | 2015-02-04 | 2015-09-09 | 贵州开磷集团股份有限公司 | Phosphogypsum-based imitated cedar structure building material and preparation method thereof |
| CN105399392A (en) * | 2015-11-30 | 2016-03-16 | 贵州川恒化工股份有限公司 | Bricks made from semi-hydrate phosphogypsum and making method thereof |
| CN106007627A (en) * | 2016-05-26 | 2016-10-12 | 湖州德海新型建材有限公司 | Preparation method of sound and heat insulating block with flame retardant effect |
| CN106007626A (en) * | 2016-05-26 | 2016-10-12 | 湖州德海新型建材有限公司 | Preparation method of sound-insulation and thermal-insulation building block |
| CN109665739A (en) * | 2018-11-07 | 2019-04-23 | 宁夏宝塔化工中心实验室(有限公司) | A kind of efficient gypsum reinforcing agent |
| CN110451829B (en) * | 2019-08-21 | 2022-02-08 | 苏州市兴邦化学建材有限公司 | Phosphogypsum modifier and preparation method thereof |
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2002
- 2002-01-22 CN CNB021132585A patent/CN1259272C/en not_active Expired - Fee Related
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