CN101050097A - Method for fabricating lightweight wall body by using BIF mine tailings - Google Patents
Method for fabricating lightweight wall body by using BIF mine tailings Download PDFInfo
- Publication number
- CN101050097A CN101050097A CNA2007100387902A CN200710038790A CN101050097A CN 101050097 A CN101050097 A CN 101050097A CN A2007100387902 A CNA2007100387902 A CN A2007100387902A CN 200710038790 A CN200710038790 A CN 200710038790A CN 101050097 A CN101050097 A CN 101050097A
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- CN
- China
- Prior art keywords
- bif
- mine tailing
- binding agent
- wall material
- biomass binding
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Classifications
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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
Abstract
This invention relates to a method for preparing lightweight wall material from BIF gangue. The raw materials comprise: BIF gangue 85-90 wt. %, inorganic calcium gelatinizing agent (one of cement, lime and gypsum) 5-10 wt. %, and lye-modified biomass binder (one of paddy straw and wheat straw) 5-10 wt. %. The method comprises: preparing the raw materials, mixing by stirring, molding, drying and sintering. The lightweight wall material has such advantages as light weight (1.14-1.4 g/cm3), high porosity (25-40%), and high compressive strength (3.0-10.0 MPa).
Description
Technical field
The present invention relates to the method that a kind of BIF of utilization mine tailing prepares light wall material, belong to waste residue utilization and material of construction fabricating technology field.
Background technology
In the exploitation of mineral resources and the course of processing, produce a large amount of mine tailings, mine tailing generally by waterpower through pipe-line transportation to the mine tailing storehouse, adopt the stacking mode of precipitation to handle.The mine tailing of storing up takies a large amount of soils, water surrounding, atmospheric environment and the farmland of mining area periphery is caused have a strong impact on; Mine tailing has become main environmental pollution source, mining area.But on the other hand, the mine tailing of being made up of multi mineral then is very abundant secondary resource, and the recycling of mine tailing is the current resource and environment lance matter urgent problem under the situation that becomes increasingly conspicuous.
Materials for wall accounts for more than 70% in China's building construction material; wherein solid clay brick accounts for more than 60% of materials for wall; in order to protect cultivated land, China progressively forbids producing and using solid clay brick, greatly develops novel wall materials such as various industrial solid castoffs, slag.
To utilizing iron tailings to prepare materials for walls such as steamed brick, vitrified brick and non-fired and non-steamed bricks certain research and development has been arranged both at home and abroad, but still had some problems, lower as the mine tailing utilization ratio, consumption is little; Need add a large amount of gelling material when producing non-sintered products, make cost higher.
Summary of the invention
The purpose of this invention is to provide a kind of method for preparing light wall material with the BIF mine tailing.
BIF (Belt Iron Formations) is a strip-type iron ore structure, is very wide, the large numbers of iron ore resource that distributes, and China's Anshan type iron ore promptly belongs to this type of.
A kind of BIF of utilization mine tailing of the present invention prepares the method for light wall material, it is characterized in that following technological process and step are arranged:
A. with the BIF mine tailing as main raw material, be auxiliary material with inorganic calcareous jelling agent and biomass binding agent; The weight percent proportioning of each raw material is:
BIF mine tailing 85～90%;
Inorganic calcareous jelling agent 5～10%; Inorganic calcareous jelling agent is any in cement, lime or the gypsum;
Biomass binding agent 5～10%; The biomass binding agent is an alkali lye modified biomass binding agent, comprises in paddy stalk, the wheat straw any;
B. by above-mentioned prescription weighing and burden, add less water, this admixtion is pressed traditional common process through stirring, mixing, moulding, drying, each operation of sintering, make light cinder brick or blockwork material.
The chemical ingredients of above-mentioned BIF mine tailing is: (wt%)
SiO
2 70～83％
Fe
2O
3 6～15％
Al
2O
3 1～7％
CaO 1～5％
MgO 1～5％
Above-mentioned alkali lye modified biomass binding agent, its compound method are with after paddy stalk or the wheat straw pulverizing mixing, add the sodium hydroxide sig water again, are heated to 90 ℃, form through mixing again.
Characteristics of the present invention and advantage are as follows:
(1) the present invention utilizes the light wall material of BIF mine tailing preparation, color homogeneous, smooth surface, flawless.
(2) the present invention utilizes the light wall material of BIF mine tailing preparation, has porous, lightweight, characteristic such as high-strength; Volume density is 1.1～1.4g/cm
3, apparent porosity 25～40%, pressure resistance is 3.0～10.0MPa.
(3) harmful element such as not leaded, the mercury of BIF mine tailing, arsenic, non-secondary pollution meets GB6566-200 " the radioactive material nucleic is limited the quantity of " standard.
(4) in sintering process, " internal combustion " takes place the biomass binding agent provides heat, and every (amounting to into standard square) can save heat energy 850～1700KJ, accounts for 16.9～42.8% of required heat energy.
(5) in use, the vesicular structure materials for wall is low because of thermal conductivity, has insulation effect.
Embodiment
After now specific embodiments of the invention being described in.
Embodiment 1
The technological process and the step of present embodiment are as described below:
(1) prepares alkali lye modified biomass binding agent at first in advance, its preparation method is: prepare burden after pulverizing mixing by prescription paddy stalk or wheat straw, in admixtion, add 0.1mol concentration hydrogen sodium hydroxide solution, be heated to 90 ℃, be constrained to alkali lye modified biomass binding agent after mixing, stand-by.
(2) take by weighing BIF mine tailing 90Kg, inorganic calcareous jelling agent 5Kg, above-mentioned alkali lye modified biomass binding agent 5Kg, add less water, be placed in the homogenizer and mix, carry out following each operation by traditional common process method, i.e. light cinder brick or blockwork material are tied, are finally made in moulding, drying, baking.
The light cinder brick color homogeneous that present embodiment makes, smooth surface, flawless; Volume density is 1.314g/cm
3, apparent porosity is 31.4%, ultimate compression strength is 7.84MPa.
In practical engineering application, can be bonding directly as the materials for wall of buildings with lime and brick.
Claims (3)
1. method of utilizing the BIF mine tailing to prepare light wall material is characterized in that following technological process and step are arranged:
A. with the BIF mine tailing as main raw material, be auxiliary material with inorganic calcareous jelling agent and biomass binding agent; The weight percent proportioning of each raw material is:
BIF mine tailing 85～90%;
Inorganic calcareous jelling agent 5～10%; Inorganic calcareous jelling agent is any in cement, lime or the gypsum;
Biomass binding agent 5～10%; The biomass binding agent is an alkali lye modified biomass binding agent, comprises in paddy stalk, the wheat straw any;
B. by above-mentioned prescription weighing and burden, name is gone into less water, and this admixtion is mixed through stirring by traditional common process, moulding, drying, each operation of sintering make light cinder brick or blockwork material.
2. a kind of BIF of utilization mine tailing as claimed in claim 1 prepares the method for light wall material, it is characterized in that the chemical ingredients of described BIF mine tailing is: (wt%)
SiO
2 70～83％
Fe
2O
3 6～15％
Al
2O
3 1～7％
CaO 1～5％
MgO 1～5％。
3. a kind of BIF of utilization mine tailing as claimed in claim 1 prepares the method for light wall material, it is characterized in that described alkali lye modified biomass binding agent, its compound method is with after paddy stalk or the wheat straw pulverizing mixing, add the sodium hydroxide sig water again, be heated to 90 ℃, form through mixing again.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2007100387902A CN101050097A (en) | 2007-03-29 | 2007-03-29 | Method for fabricating lightweight wall body by using BIF mine tailings |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2007100387902A CN101050097A (en) | 2007-03-29 | 2007-03-29 | Method for fabricating lightweight wall body by using BIF mine tailings |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101050097A true CN101050097A (en) | 2007-10-10 |
Family
ID=38781729
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2007100387902A Pending CN101050097A (en) | 2007-03-29 | 2007-03-29 | Method for fabricating lightweight wall body by using BIF mine tailings |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101050097A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102408215A (en) * | 2011-08-23 | 2012-04-11 | 清华大学 | Tailings straw light wall brick |
| CN104045252A (en) * | 2014-05-29 | 2014-09-17 | 重庆聚信矿业有限责任公司 | Method for producing novel wall material by utilizing waste residues |
| CN108017293A (en) * | 2017-11-27 | 2018-05-11 | 固岩科技发展有限公司 | A kind of gelling agent and construction material based on iron tailings |
| CN108033807A (en) * | 2017-11-27 | 2018-05-15 | 固岩科技发展有限公司 | A kind of construction method based on the cementitious material of iron tailings in highway high roadbed |
| CN113429188A (en) * | 2021-06-18 | 2021-09-24 | 湖北沛高环保科技有限公司 | Comprehensive treatment and utilization method for solid waste of tailings |
| CN117550913A (en) * | 2024-01-11 | 2024-02-13 | 内蒙古工业大学 | Lightweight solid waste porous aggregate and preparation method and application thereof |
-
2007
- 2007-03-29 CN CNA2007100387902A patent/CN101050097A/en active Pending
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102408215A (en) * | 2011-08-23 | 2012-04-11 | 清华大学 | Tailings straw light wall brick |
| CN104045252A (en) * | 2014-05-29 | 2014-09-17 | 重庆聚信矿业有限责任公司 | Method for producing novel wall material by utilizing waste residues |
| CN104045252B (en) * | 2014-05-29 | 2015-12-09 | 重庆聚信矿业有限责任公司 | Waste residue is utilized to produce the method for materials for wall |
| CN108017293A (en) * | 2017-11-27 | 2018-05-11 | 固岩科技发展有限公司 | A kind of gelling agent and construction material based on iron tailings |
| CN108033807A (en) * | 2017-11-27 | 2018-05-15 | 固岩科技发展有限公司 | A kind of construction method based on the cementitious material of iron tailings in highway high roadbed |
| CN108033807B (en) * | 2017-11-27 | 2020-12-29 | 固岩科技发展有限公司 | Construction method of cementing material based on iron tailings in highway high fill |
| CN108017293B (en) * | 2017-11-27 | 2021-01-12 | 固岩科技发展有限公司 | Gelling agent and building material based on iron tailings |
| CN113429188A (en) * | 2021-06-18 | 2021-09-24 | 湖北沛高环保科技有限公司 | Comprehensive treatment and utilization method for solid waste of tailings |
| CN113429188B (en) * | 2021-06-18 | 2022-06-10 | 湖北沛高环保科技有限公司 | Comprehensive treatment and utilization method for solid waste of tailings |
| CN117550913A (en) * | 2024-01-11 | 2024-02-13 | 内蒙古工业大学 | Lightweight solid waste porous aggregate and preparation method and application thereof |
| CN117550913B (en) * | 2024-01-11 | 2024-03-26 | 内蒙古工业大学 | Lightweight solid waste porous aggregate and preparation method and application thereof |
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