CN104478343A - Acid-leaching-method laterite-nickel-slag-based autoclaved wall material and preparation method thereof - Google Patents
Acid-leaching-method laterite-nickel-slag-based autoclaved wall material and preparation method thereof Download PDFInfo
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- CN104478343A CN104478343A CN201410818402.2A CN201410818402A CN104478343A CN 104478343 A CN104478343 A CN 104478343A CN 201410818402 A CN201410818402 A CN 201410818402A CN 104478343 A CN104478343 A CN 104478343A
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- nickel slag
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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 invention discloses an acid-leaching-method laterite-nickel-slag-based autoclaved wall material. A preparation method of the wall material mainly comprises steps as follows: mixing raw materials in parts by weight as follows: 50-92 parts of laterite nickel slag, 4-30 parts of slaked lime or 2-25 parts of quick lime, 0-30 parts of cement and 0-30 parts of water; performing compression molding; performing autoclaved curing. The method is simple in process, lower in autoclaved curing temperature and shorter in autoclaved curing time, has the low requirement for molding equipment, and has the advantages that the energy consumption is low and the fixed asset investment is lower. Besides, the prepared acid-leaching-method laterite-nickel-slag-based autoclaved wall material is high in strength (more than 40 MPa at most), good in water resistance and low in porosity, and the raw materials are mainly industrial waste residues, so that the autoclaved wall material is environment-friendly and can meet the requirement for novel wall materials.
Description
Technical field
The present invention relates to building material technical field, specifically a kind of pickling process laterite nickel slag base steam pressure materials for wall and preparation method thereof.
Background technology
China is the consumption big country of nickel, and within 2013, Chinese nickel product consumption is 910,000 tons, accounts for 50% of global aggregate demand.Nickel minerals is mainly divided into nickel sulfide ore and nickel oxide ore, and wherein the latter accounts for world's total resources 3/4ths, mainly based on red soil nickel ore.Because sulphide ores is of high grade, so it is smelted by sulphide ores that nickel before the eighties in 20th century and alloy thereof mainly utilize.But along with sulphide ores resource reduces, red soil nickel ore also comes into one's own day by day.
Along with increasing area uses red soil nickel ore to extract nickel and alloy thereof, the waste thereupon produced also grows with each passing day, and main disposal options is for simply to store up, and this not only wastes resource, and takies a large amount of soils, destroys the ecotope of periphery.Therefore, extremely urgent to the comprehensive utilization of laterite nickel slag.
Current research both domestic and external mainly concentrates on the processing method how extracting nickel and alloy thereof from red soil nickel ore, and not to therefore and produce laterite nickel slag propose method of disposal.
In addition, also there are some both at home and abroad and utilize trade waste (as phosphogypsum/flyash/mine tailing/electrolytic manganese residues/building waste/nickelous sulfide slag etc.) to prepare the method for steam pressure materials for wall, but all do not relate to the research to laterite nickel slag.In addition, present stage steam pressure materials for wall forming pressure be generally about 20MPa, about steam pressure temperature 150-190 DEG C, the steam pressure time is about 6-8 hour, and energy consumption is higher.
Steaming pressing product cardinal principle be calcareous material and siliceous material under the condition of steam press maintenance, with water generation hydration reaction, produce the products such as CSH/ tobermorite and intensity be provided.
Summary of the invention
Technical problem to be solved by this invention is to provide a kind of pickling process laterite nickel slag base steam pressure materials for wall and preparation method thereof, make laterite nickel slag realize refuse reclamation, and reduce the production cost of steam pressure materials for wall, the steam pressure materials for wall intensity obtained is high, water-tolerant, porosity is low.
The present invention solves the problems of the technologies described above with following technical scheme:
Pickling process laterite nickel slag base steam pressure materials for wall of the present invention, it mixes rear compression moulding by following raw material by weight ratio, and makes through steam press maintenance:
Laterite nickel slag 50-92 part
White lime 4-30 part or unslaked lime 2-25 part
Cement 0-30 part
Water 0-30 part.
In order to reduce costs, under laterite nickel slag utilization ratio reaches maximized prerequisite, ensure to have certain intensity, preferably the weight part of described laterite nickel slag base steam pressure materials for wall Raw consists of:
Laterite nickel slag 70-85 part
White lime 10-15 part or unslaked lime 7-12 part
Cement 5-15 part
Water 20-30 part.
In order to optimizing product performance, also can on the basis of above-mentioned formula the upper outside toughener mixing the 0.2-2.0% of total solids raw material weight.Described toughener is the one in lignin sulfonate or polycarboxylic acid.
The preparation method of pickling process laterite nickel slag base steam pressure materials for wall of the present invention, the operation steps of the method is as follows:
First each component mixed in proportion, compression moulding, forming pressure is 10-40MPa, and the base substrate after shaping is directly put into autoclave and carried out steam press maintenance, steam pressure temperature 30-190 DEG C, steam pressure time 1-12h.
The inventive method is simple, and less demanding to molding device, steam press maintenance temperature is lower, and the steam press maintenance time is shorter, has energy consumption low, the advantage of less investment of permanent assets.In addition pickling process laterite nickel slag base steam pressure materials for wall intensity high (reaching as high as more than 40 MPa) prepared, water-tolerant, porosity is low, and starting material are mainly industrial residue, not only environmental protection but also can meet the requirement of novel wall material.
Specific implementation method
The laterite nickel slag that the inventive method adopts is the waste after red soil nickel ore extracts nickel and alloy thereof, SiO contained by it
2weight percentage be the weight percentage of 40-85%, MgO be 0-20%, Fe
2o
3weight percentage be 0-20%, Al
2o
3weight percentage be the weight percentage of 0-15%, CaO be 0-15%, the weight percentage of loss on ignition is 0-20%.
Visible, the main ingredient of laterite nickel slag is silicon-dioxide, and the present invention by Appropriate application laterite nickel slag, achieves resource reutilization, for materials for wall provides new raw material, again can protection of the environment, and avoid banking up or landfill as waste.
Below the embodiment of the inventive method:
Embodiment 1-6
Laterite nickel slag SiO in following example
2weight percentage be the weight percentage of 61.68%, MgO be 13.28%, Fe
2o
3weight percentage be 12.77%, Al
2o
3weight percentage be the weight percentage of 2.48%, CaO be 1.73%, the weight percentage of loss on ignition is 7.78%.
In following example, laterite nickel slag meso-position radius is 13.13 microns, the weight percentage of particle diameter≤2 micron is 10%, it is 50% that footpath is less than 20 microns of weight percentage being greater than 2 microns, it is 23% that footpath is less than 45 microns of weight percentage being greater than 20 microns, it is 10% that footpath is less than 80 microns of weight percentage being greater than 45 microns, and the weight percentage of footpath >=80 micron is 7%.
In following example, the weight percentage of cement particle diameter≤80 micron is 95%.In following example, the weight percentage of white lime≤80 micron is 100%, Ca (OH) in white lime
2weight percentage>=95%.
Water is as outer permeation material in addition, does not participate in calculating when calculating rate of body weight gain.
Embodiment 1-6 preparation process is as follows:
By each component of parts by weight of raw materials composition mixing in table 1, put into the mould compression moulding that diameter is 20mm × 20mm, then put into steam pressure axe and carry out steam press maintenance, steam pressure temperature is 170 DEG C, steam pressure 6h.
Table 1
Embodiment 7-10
Embodiment 7-12 preparation process is as follows:
By each component of parts by weight of raw materials composition mixing in table 2, put into the mould compression moulding that diameter is 20mm × 20mm, forming pressure is 20MPa, then puts into steam pressure axe and carries out steam press maintenance.
Table 2
Performance test:
The performance test results of embodiment 1-6 is as shown in table 3.
Table 3
The performance test results of embodiment 7-10 is as shown in table 4.
Table 4
As can be seen from table 3/4, not only waste utilization rate is high for pickling process laterite nickel slag base steam pressure materials for wall of the present invention, and superior performance, strength range is large, meets various strength grade demand.
Claims (4)
1. a pickling process laterite nickel slag base steam pressure materials for wall, is characterized in that, it mixes rear compression moulding by following raw material by weight ratio, and makes through steam press maintenance:
Laterite nickel slag 50-92 part
White lime 4-30 part or unslaked lime 2-25 part
Cement 0-30 part
Water 0-30 part.
2. pickling process laterite nickel slag base steam pressure materials for wall according to claim 1, it is characterized in that, the optimum ratio of described raw material is:
Laterite nickel slag 70-85 part
White lime 10-15 part or unslaked lime 7-12 part
Cement 5-15
Water 20-30.
3. pickling process laterite nickel slag base steam pressure materials for wall according to claim 1 or 2, is characterized in that, in the raw material of preparation, add the 0.2-2.0% toughener of total solids raw material weight, and described toughener is the one in lignin sulfonate or polycarboxylic acid.
4., according to the preparation method of the arbitrary described pickling process laterite nickel slag base steam pressure materials for wall of claims 1 to 3, it is characterized in that, the operation steps of the method is as follows:
First each component mixed in proportion, compression moulding, forming pressure is 10-40Mpa, and the base substrate after shaping is directly put into autoclave and carried out steam press maintenance, steam pressure temperature 30-180 DEG C, steam pressure time 1-12h.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410818402.2A CN104478343B (en) | 2014-12-24 | 2014-12-24 | A kind of acid-hatching of young eggs laterite nickel slag base steam pressure materials for wall and preparation method thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410818402.2A CN104478343B (en) | 2014-12-24 | 2014-12-24 | A kind of acid-hatching of young eggs laterite nickel slag base steam pressure materials for wall and preparation method thereof |
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| CN104478343A true CN104478343A (en) | 2015-04-01 |
| CN104478343B CN104478343B (en) | 2016-07-06 |
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| CN201410818402.2A Expired - Fee Related CN104478343B (en) | 2014-12-24 | 2014-12-24 | A kind of acid-hatching of young eggs laterite nickel slag base steam pressure materials for wall and preparation method thereof |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104829181A (en) * | 2015-04-29 | 2015-08-12 | 广西大学 | Acid-leaching-method laterite-nickel-slag-based autoclaved product and preparation method thereof |
| CN105837147A (en) * | 2016-03-25 | 2016-08-10 | 刘建荣 | Casting used sand composite brick and preparation method |
| CN109704677A (en) * | 2019-01-21 | 2019-05-03 | 江苏博拓新型建筑材料有限公司 | Nickel slag sand strength cement-based grouting material mixed with nickel ground-slag for building and preparation method thereof |
Citations (3)
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|---|---|---|---|---|
| JPH0345573A (en) * | 1989-07-13 | 1991-02-27 | Sumitomo Metal Mining Co Ltd | Lightweight cellular concrete composition and production of the same concrete structure using the same |
| CN102424550A (en) * | 2011-09-06 | 2012-04-25 | 池州西恩新材料科技有限公司 | Laterite slag baking-free brick and preparation method thereof |
| CN103408277A (en) * | 2013-06-09 | 2013-11-27 | 东南大学 | Nickel slag brick and preparation method thereof |
-
2014
- 2014-12-24 CN CN201410818402.2A patent/CN104478343B/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0345573A (en) * | 1989-07-13 | 1991-02-27 | Sumitomo Metal Mining Co Ltd | Lightweight cellular concrete composition and production of the same concrete structure using the same |
| CN102424550A (en) * | 2011-09-06 | 2012-04-25 | 池州西恩新材料科技有限公司 | Laterite slag baking-free brick and preparation method thereof |
| CN103408277A (en) * | 2013-06-09 | 2013-11-27 | 东南大学 | Nickel slag brick and preparation method thereof |
Non-Patent Citations (1)
| Title |
|---|
| 余涛等: "影响镍渣蒸压制品抗压强度的因素研究", 《新型建筑材料》 * |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104829181A (en) * | 2015-04-29 | 2015-08-12 | 广西大学 | Acid-leaching-method laterite-nickel-slag-based autoclaved product and preparation method thereof |
| CN105837147A (en) * | 2016-03-25 | 2016-08-10 | 刘建荣 | Casting used sand composite brick and preparation method |
| CN109704677A (en) * | 2019-01-21 | 2019-05-03 | 江苏博拓新型建筑材料有限公司 | Nickel slag sand strength cement-based grouting material mixed with nickel ground-slag for building and preparation method thereof |
| CN109704677B (en) * | 2019-01-21 | 2021-09-07 | 江苏博拓新型建筑材料有限公司 | Cement-based grouting material for mixing nickel slag sand and nickel slag powder for buildings and preparation method thereof |
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| CN104478343B (en) | 2016-07-06 |
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