CN1958458A - Formula for preparing dimension stone of magnesia alumina spinel by using sludge from factory of aluminum section, and preparation method - Google Patents
Formula for preparing dimension stone of magnesia alumina spinel by using sludge from factory of aluminum section, and preparation method Download PDFInfo
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- CN1958458A CN1958458A CN 200610135266 CN200610135266A CN1958458A CN 1958458 A CN1958458 A CN 1958458A CN 200610135266 CN200610135266 CN 200610135266 CN 200610135266 A CN200610135266 A CN 200610135266A CN 1958458 A CN1958458 A CN 1958458A
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Abstract
This invention provides formula and method for preparing magnesium aluminate spinel material by using sludge from aluminum profile plants as the raw material. The formula comprises sludge from aluminum profile plants and basic magnesium carbonate as the major raw materials. The method comprises: mixing the raw materials, pressing for shaping, reacting at high temperatures, and cooling the product to obtain magnesium aluminate spinel material. The method utilizes sludge from aluminum profile plants as the raw material to prepare magnesium aluminate spinel material, thus can solve the problem of serious environmental pollution caused by the sludge, save the production cost and have a high profit. The prepared magnesium aluminate spinel material has excellent high-temperature thermal properties, mechanical properties and chemical stability, especially obvious chemical stability in alkaline conditions, and is widely used in the fields of refractory materials and ceramics.
Description
Technical field
The present invention relates to a kind of ecological environment material nd, i.e. the comprehensive utilization of solid waste more specifically relates to a kind of aluminium section bar plant sludge that utilizes and prepares composition of raw materials of dimension stone of magnesia alumina spinel and preparation method thereof.
Technical background:
Aluminium section bar plant can produce a large amount of oyster white colloid waste liquids in the aluminium shape surface treating processes, the ultra-fine and high dispersing of particle in this waste liquid, in case directly discharging, the severe contamination that will inevitably cause environment and river waters, destruction ecotope.Therefore must and filter and remove, remaining clarifying filtrate discharge a large amount of sludge settlings in the waste liquid.More than 10,000 ton in the annual recyclable mud of large aluminum profile factory, there are several hundred families in domestic aluminium section bar enterprise, annual generation industrial sludge quantity is huge, if it is not reasonably handled, will inevitably have a strong impact on the comprehensive regulation and the ordinary production of aluminium section bar plant waste liquid, and cause the secondary pollution of aluminium section bar plant.In addition, this aluminium section bar plant sludge main component is γ-AlOOH, does not add just to utilize directly to discard, and also can cause very big waste to resource.Therefore the comprehensive utilization to this mud not only has important environment protection significance but also also significant to the redevelopment utilization of efficient resource.
By retrieval, at home and abroad there is no the report that utilizes waste aluminum sludge to prepare dimension stone of magnesia alumina spinel, this project belongs to the technology of first research invention both at home and abroad.The invention belongs to the comprehensive utilization of solid waste, not only solved the severe contamination of waste aluminum sludge to environment, and saved production cost, remarkable in economical benefits has application value.
Summary of the invention
The present invention seeks to provide a kind of composition of raw materials and preparation method who utilizes aluminium section bar plant sludge to prepare dimension stone of magnesia alumina spinel, this preparation method not only helps utilization of waste material, and the product of producing is for having high added value and free of contamination high-quality refractory material.
The composition of raw materials that the present invention utilizes aluminium section bar plant sludge to prepare dimension stone of magnesia alumina spinel mainly is made up of aluminium section bar plant sludge and magnesium basic carbonate; Its preparation method is: with aluminium section bar plant sludge and magnesium basic carbonate is main raw material, and with raw material mixing compression moulding, through pyroreaction, reaction product is through cooling, the dimension stone of magnesia alumina spinel that obtains preparing.
Main innovate point of the present invention and characteristic are as follows:
1) raw material and technological innovation: utilize aluminium section bar plant sludge to prepare dimension stone of magnesia alumina spinel, have the innovation of ecological, environmental protective technology and raw material, have great environment protection significance.
2) by retrieval, at home and abroad there is no report and utilize waste aluminum sludge to prepare dimension stone of magnesia alumina spinel, this project belongs to the technology of first research invention both at home and abroad.
3) make full use of the characteristic of mud, improve the quality of products: the mud particle is ultra-fine, and surface-area is big, active high, help solid state reaction and form dimension stone of magnesia alumina spinel, reduce synthesis temperature, save energy and raw material processing charges, and can improve the high-temperature behavior of dimension stone of magnesia alumina spinel.
4) lower production cost: raw materials cost is very low, and economic benefit and social benefit are very remarkable, has very strong market competition ability, investment instant effect, investment devoid of risk.
Embodiment
The weight proportion of this composition of raw materials is: aluminium section bar plant sludge is 60～70%, and magnesium basic carbonate is 30～40%, Al in the composition of raw materials
2O
3The chemical composition content of/MgO is 2.1～3.0 than scope.
Preparation method's concrete steps of utilizing aluminium section bar plant sludge to prepare dimension stone of magnesia alumina spinel are:
(A) by prescription aluminium section bar plant sludge and magnesium basic carbonate were placed grinding in ball grinder 24 hours, raw material: abrading-ball: water=1: 1.5: 0.8, the slurry filtration and dewatering of grinding, 100 ℃ of oven dry 24 hours and broken obtain less than 30 purposes system material.
(B) add (weight ratio) 6～8% water in grinding the system material and carry out batch mixing, batch mixing is even, batch mixing is carried out half-dried molded.
(C) become 100 ℃ of oven dry of parison 24 hours.
(D) dry body places the kiln reaction sintering, and the reaction sintering temperature is 1300～1650 ℃, and the reaction sintering soaking time is 1～8 hour, naturally cools to room temperature, obtains purity and be 80～98% dimension stone of magnesia alumina spinel.
Embodiment 1
The weight proportion of this routine composition of raw materials: aluminium section bar plant sludge is 60%, and magnesium basic carbonate is 40%.By prescription two kinds of raw materials are weighed, placed the ball mill wet grinding 24 hours, raw material: abrading-ball: water=1: 1.5: 0.8, the slurry filtration and dewatering of grinding, 100 ℃ of oven dry 24 hours, fragmentation obtains less than 30 purposes system material.Add 6% water and carry out batch mixing in grinding the system material, batch mixing is even, compound is carried out half-dried molded.Become 100 ℃ of oven dry of parison 24 hours, dry body places the kiln reaction sintering, and the reaction sintering temperature is 1400 ℃, and the reaction sintering soaking time is 4 hours, naturally cools to room temperature, obtains the synthetic dimension stone of magnesia alumina spinel.
Embodiment 2
The weight proportion of this routine composition of raw materials: aluminium section bar plant sludge is 65%, and magnesium basic carbonate is 35%.By prescription two kinds of raw materials are weighed, placed the ball mill wet grinding 24 hours, raw material: abrading-ball: water=1: 1.5: 0.8, the slurry filtration and dewatering of grinding, 100 ℃ of oven dry 24 hours and broken obtain less than 30 purposes system material.Add 6% water and carry out batch mixing in grinding the system material, batch mixing is even, compound is carried out half-dried molded.Become 100 ℃ of oven dry of parison baking 24 hours, dry body places the kiln reaction sintering, and the reaction sintering temperature is 1400 ℃, and the reaction sintering soaking time is 4 hours, naturally cools to room temperature, obtains the synthetic dimension stone of magnesia alumina spinel.
Embodiment 3
The weight proportion of this routine composition of raw materials: aluminium section bar plant sludge is 70%, and magnesium basic carbonate is 30%.By prescription two kinds of raw materials are weighed, placed the ball mill wet grinding 24 hours, raw material: abrading-ball: water=1: 1.5: 0.8, the slurry filtration and dewatering of grinding, 100 ℃ of oven dry 24 hours and broken obtain less than 30 purposes system material.Add 6% water and carry out batch mixing in grinding the system material, batch mixing is even, compound is carried out half-dried molded.Become 100 ℃ of oven dry of parison 24 hours, dry body places the kiln reaction sintering, and the reaction sintering temperature is 1400 ℃, and the reaction sintering soaking time is 8 hours, naturally cools to room temperature, obtains the synthetic dimension stone of magnesia alumina spinel.
Embodiment 4
The weight proportion of this routine composition of raw materials: aluminium section bar plant sludge is 65%, and magnesium basic carbonate is 35%.By prescription two kinds of raw materials are weighed, placed the ball mill wet grinding 24 hours, raw material: abrading-ball: water=1: 1.5: 0.8, the slurry filtration and dewatering of grinding, 100 ℃ of oven dry 24 hours and broken obtain less than 30 purposes system material.Add 6% water and carry out batch mixing in grinding the system material, batch mixing is even, compound is carried out half-dried molded.Become 100 ℃ of oven dry of parison 24 hours, dry body places the kiln reaction sintering, and the reaction sintering temperature is 1500 ℃, and the reaction sintering soaking time is 4 hours, naturally cools to room temperature, obtains the synthetic dimension stone of magnesia alumina spinel.
Embodiment 5
The weight proportion of this routine composition of raw materials: aluminium section bar plant sludge is 65%, and magnesium basic carbonate is 35%.By prescription two kinds of raw materials are weighed, placed the ball mill wet grinding 24 hours, raw material: abrading-ball: water=1: 1.5: 0.8, the slurry filtration and dewatering of grinding, 100 ℃ of oven dry 24 hours and broken obtain less than 30 purposes system material.Add 6% water and carry out batch mixing in grinding the system material, batch mixing is even, compound is carried out half-dried molded.Become 100 ℃ of oven dry of parison 24 hours, dry body places the kiln reaction sintering, and the reaction sintering temperature is 1550 ℃, and the reaction sintering soaking time is 1 hour, naturally cools to room temperature, obtains the synthetic dimension stone of magnesia alumina spinel.
Embodiment 6
The weight proportion of this routine composition of raw materials: aluminium section bar plant sludge is 65%, and magnesium basic carbonate is 35%.By prescription two kinds of raw materials are weighed, placed the ball mill wet grinding 24 hours, raw material: abrading-ball: water=1: 1.5: 0.8, the slurry filtration and dewatering of grinding, 100 ℃ of oven dry 24 hours and broken obtain less than 30 purposes system material.Add 6% water and carry out batch mixing in grinding the system material, batch mixing is even, compound is carried out half-dried molded.Become 100 ℃ of oven dry of parison 24 hours, dry body places the kiln reaction sintering, and the reaction sintering temperature is 1360 ℃, and the reaction sintering soaking time is 4 hours, naturally cools to room temperature, obtains the synthetic dimension stone of magnesia alumina spinel.
Embodiment 7
The weight proportion of this routine composition of raw materials: aluminium section bar plant sludge is 65%, and magnesium basic carbonate is 35%.By prescription two kinds of raw materials are weighed, placed the ball mill wet grinding 24 hours, raw material: abrading-ball: water=1: 1.5: 0.8, the slurry filtration and dewatering of grinding, 100 ℃ of oven dry 24 hours and broken obtain less than 30 purposes system material.Add 6% water and carry out batch mixing in grinding the system material, batch mixing is even, compound is carried out half-dried molded.Become 100 ℃ of oven dry of parison 24 hours, dry body places the kiln reaction sintering, and the reaction sintering temperature is 1500 ℃, and the reaction sintering soaking time is 6 hours, naturally cools to room temperature, obtains the synthetic dimension stone of magnesia alumina spinel.
Embodiment 8
The weight proportion of this routine composition of raw materials: aluminium section bar plant sludge is 65%, and magnesium basic carbonate is 35%.By prescription two kinds of raw materials are weighed, placed the ball mill wet grinding 24 hours, raw material: abrading-ball: water=1: 1.5: 0.8, the slurry filtration and dewatering of grinding, 100 ℃ of oven dry 24 hours and broken obtain less than 30 purposes system material.Add 6% water and carry out batch mixing in grinding the system material, batch mixing is even, compound is carried out half-dried molded.Become 100 ℃ of oven dry of parison 24 hours, dry body places the kiln reaction sintering, and the reaction sintering temperature is 1500 ℃, and the reaction sintering soaking time is 1 hour, naturally cools to room temperature, obtains the synthetic dimension stone of magnesia alumina spinel.
Embodiment 9
The weight proportion of this routine composition of raw materials: aluminium section bar plant sludge is 65%, and magnesium basic carbonate is 35%.By prescription two kinds of raw materials are weighed, placed the ball mill wet grinding 24 hours, raw material: abrading-ball: water=1: 1.5: 0.8, the slurry filtration and dewatering of grinding, 100 ℃ of oven dry 24 hours and broken obtain less than 30 purposes system material.Add 6% water and carry out batch mixing in grinding the system material, batch mixing is even, compound is carried out half-dried molded.Become 100 ℃ of oven dry of parison 24 hours, dry body places the kiln reaction sintering, and the reaction sintering temperature is 1600 ℃, and the reaction sintering soaking time is 2 hours, naturally cools to room temperature, obtains the synthetic dimension stone of magnesia alumina spinel.
The present invention utilizes waste aluminum sludge to prepare dimension stone of magnesia alumina spinel.Dimension stone of magnesia alumina spinel has excellent high-temperature thermal property, mechanical property and chemical stability, and particularly under alkaline condition, its chemical stability is particularly remarkable, has been applied to fields such as refractory materials and pottery more and more widely.
Claims (6)
1. composition of raw materials that utilizes aluminium section bar plant sludge to prepare dimension stone of magnesia alumina spinel, it is characterized in that: raw material mainly is made up of aluminium section bar plant sludge and magnesium basic carbonate.
2. the composition of raw materials that utilizes aluminium section bar plant sludge to prepare dimension stone of magnesia alumina spinel according to claim 1 is characterized in that: the weight proportion of described composition of raw materials is: aluminium section bar plant sludge is 60～70%, and magnesium basic carbonate is 30～40%.
3. the composition of raw materials that utilizes aluminium section bar plant sludge to prepare dimension stone of magnesia alumina spinel according to claim 1 and 2 is characterized in that: Al in the described composition of raw materials
2O
3The chemical composition content of/MgO is 2.1～3.0 than scope.
4. one kind is utilized aluminium section bar plant sludge synthetic MgAl spinal preparation methods, it is characterized in that: with aluminium section bar plant sludge and magnesium basic carbonate is main raw material, with raw material mixing compression moulding, through pyroreaction, reaction product prepares dimension stone of magnesia alumina spinel through cooling.
5. the preparation method who utilizes aluminium section bar plant sludge to prepare dimension stone of magnesia alumina spinel according to claim 4, it is characterized in that: the preparation process of described method is: by prescription aluminium section bar plant sludge and magnesium basic carbonate were placed grinding in ball grinder 24 hours, raw material wherein: abrading-ball: water=1: 1.5: 0.8, the slurry filtration and dewatering that grinds, 100 ℃ of oven dry 24 hours and broken obtain less than 30 purposes system material; The water that adds (weight ratio) 6～8% in the system material carries out batch mixing, and batch mixing stirs; Batch mixing compression moulding; 100 ℃ of oven dry of molding blank 24 hours; Dry body places the kiln reaction sintering, naturally cools to room temperature; Obtain MgAl
2O
4Content is 80～98% dimension stone of magnesia alumina spinel.
6. the aluminium section bar plant sludge synthetic MgAl spinal preparation methods of utilizing according to claim 5, it is characterized in that: described magnesium-aluminium spinel range of reaction temperature is 1300～1650 ℃, the reaction sintering soaking time is 1～8 hour.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006101352662A CN100463857C (en) | 2006-11-29 | 2006-11-29 | Formula for preparing dimension stone of magnesia alumina spinel by using sludge from factory of aluminum section, and preparation method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006101352662A CN100463857C (en) | 2006-11-29 | 2006-11-29 | Formula for preparing dimension stone of magnesia alumina spinel by using sludge from factory of aluminum section, and preparation method |
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| Publication Number | Publication Date |
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| CN1958458A true CN1958458A (en) | 2007-05-09 |
| CN100463857C CN100463857C (en) | 2009-02-25 |
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| CNB2006101352662A Expired - Fee Related CN100463857C (en) | 2006-11-29 | 2006-11-29 | Formula for preparing dimension stone of magnesia alumina spinel by using sludge from factory of aluminum section, and preparation method |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103936433A (en) * | 2014-03-21 | 2014-07-23 | 海城华宇耐火材料有限公司 | Method utilizing industrial slag to prepare magnesium aluminate spinel material |
| CN106316382A (en) * | 2016-08-23 | 2017-01-11 | 北京建筑大学 | Spinel prepared with waterworks sludge and preparing method thereof |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1382665A (en) * | 2001-04-26 | 2002-12-04 | 河南省登封市第二耐火材料总厂 | Synthetic MgAl spinal and its preparing process |
-
2006
- 2006-11-29 CN CNB2006101352662A patent/CN100463857C/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103936433A (en) * | 2014-03-21 | 2014-07-23 | 海城华宇耐火材料有限公司 | Method utilizing industrial slag to prepare magnesium aluminate spinel material |
| CN103936433B (en) * | 2014-03-21 | 2015-10-21 | 海城华宇耐火材料有限公司 | A kind of method utilizing industrial residue to prepare dimension stone of magnesia alumina spinel |
| CN106316382A (en) * | 2016-08-23 | 2017-01-11 | 北京建筑大学 | Spinel prepared with waterworks sludge and preparing method thereof |
| CN106316382B (en) * | 2016-08-23 | 2019-03-19 | 北京建筑大学 | Utilize the spinelle and preparation method thereof of waterworks sludge preparation |
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| CN100463857C (en) | 2009-02-25 |
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Granted publication date: 20090225 Termination date: 20111129 |