CN1071403A - A kind of novel magnesium cement and preparation technology thereof - Google Patents
A kind of novel magnesium cement and preparation technology thereof Download PDFInfo
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- CN1071403A CN1071403A CN 91107506 CN91107506A CN1071403A CN 1071403 A CN1071403 A CN 1071403A CN 91107506 CN91107506 CN 91107506 CN 91107506 A CN91107506 A CN 91107506A CN 1071403 A CN1071403 A CN 1071403A
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- magnesium cement
- preparation technology
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- novel magnesium
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Abstract
The present invention relates to a kind of novel magnesium cement fabricating technology, particularly high reactivity MgO powder is to adopt bischofite fluidization pyrolytic process technology to make, this kind high reactivity MgO powder is in harmonious proportion with aqueous salt brine with certain proportion and mixes the compound anti-water additive and the stearic silicate aggregate of suitable proportion, pour into a mould vibratory compaction after mixing, through room temperature maintenance after a while, formation water resisting property is good, and is indeformable, the novel magnesium cement goods that physical strength is high.
Description
The present invention relates to a kind of novel magnesium cement and preparation technology thereof, belong to novel anti water-based building material field.
Existing magnesium cement and preparation technology thereof have a lot of shortcomings.The invention of magnesium cement, the history in existing so far more than 100 year since it have the intensity height, advantage such as sclerosis is fast, flexible, surface gloss is good, and thermal insulation, sound insulation and preparation process are simple.Be used to the common buildings material at present, wrapping material and finishing material etc.But its handicraft product also exists, and water repelling property is poor, work-ing life is short, yielding, and stainless steel had stronger shortcomings such as corrosive nature, thereby limited its range of application.
U.S.P 1981，57188438
U.S.P 1981，57-188440
U.S.P 1979，4174228
Purpose of the present invention is to provide a kind of rational Technology and unique compositing formula, prepares the water resisting magnesium cement of a kind of novel high-strength.
Major technique of the present invention thes contents are as follows:
Getting the extra light calcined magnesia powder that adopts fluidization technology to make from bischofite is main raw material, with bittern is blender, mix compound anti-water additive and hard silicate aggregate, cast vibratory compaction after mixing, maintenance, form a kind of novel, high-strength, water resisting magnesium cement, its technical process is:
Effect of the present invention:
Adopt the novel magnesium cement of prescription involved in the present invention and Technology preparation to improve greatly than traditional magnesium cement water resisting property, deformability significantly reduces, and physical strength increases considerably, and soaks 1 year loss of strength≤5%, deformation rate≤0.5% in the water.
To pay the bischofite of product be the novel magnesium cement goods that raw material production the present invention relates to produce 200000 tons of Repone K per year, the abundant salt lake resources in comprehensive development and utilization China Qinghai to the utmost, make a silk purse out of a sow's ear, and can also guarantee Qinghai potash fertilizer plant Repone K product ordinary production.Estimate to produce 1m
3The novel magnesium cement goods can produce the value about 50 yuan.All be used for producing the novel magnesium cement goods if Qinghai Cha Er sweat potash fertilizer plant is paid the bischofite of product, its output value can reach (every year) about 100,000,000 yuan.The output value of this main products Repone K is also high, and economic benefit is very considerable.
Example 1 heat-obtaining is separated (fluidization technology) gained and is contained 90 parts of products of 80-95% high reactivity MgO (weight), and 60 parts of magnesias are made raw material; Other adds 100 order quartz sands (account for batching 25%), and 40 parts in bittern makes clean slurry with above-mentioned component uniform mixing, casting in the working standard mould, and making becomes 2 * 2 * 2cm standard test specimen, puts in 20 ± 2 ℃ of air maintenance 28 days, presses WB
3-82 measure its ultimate compression strength reaches 110MPa.
Example 2 is got 100 parts of above-mentioned MgO products, 100 parts in commercially available slag, and (granularity is 200 mesh screen residues≤10%) adds 100 order quartz sands (account for total batching 30%) in addition and (includes K with compound alkaline solution
2CO and water glass 1: 1) 30 parts, add water, above-mentioned raw materials is reconciled into the slurry of standard consistency (pressing the modulation of GB1347-77 standard), the same routine moulding, 20 ± 2 ℃ of wet supporting one day, after the demoulding, WB is pressed in sample maintenance 28 days in water
3-82 measure its ultimate compression strength reaches 80MPa.
100 parts of example 3 above-mentioned MgO products, (120 order quartz sands account for batching 50%), 60 parts of compound alkaline solutions, bittern 100 parts (ρ=1.2) reconciles into standard consistency (the same example) slurry, and moulding becomes 40 * 40 * 160mm standard test specimen, and WB is pressed in room temperature maintenance 22 days
3-82 measure its folding strength reaches 80-85MPa.
Example 4 the same examples, maintenance is 1 year in the room temperature water, presses WB
3-82 measure its ultimate compression strength reaches 75MPa.
Claims (3)
1, a kind of preparation technology of novel magnesium cement is characterized in that:
(1) gets the extra light calcined magnesia (containing 80-95%MPa) that adopts fluidization technology to make and make main raw material from bischofite;
(2) technical process is:
A preparation of raw material parts by weight
Extra light calcined magnesia 90-100
Distiller liquor bittern 40-100
Compound anti-water additive 30-60
Hard silicate skeleton quartz sand 25-50 (total stuff amount %)
B mixing, the pulping that is in harmonious proportion.
C vibratory compaction.
20 ± 2 ℃ of D room temperature maintenances 22 days-1 year.
2, according to the preparation technology of claim 1, it is characterized in that the magnesium cement that described technology makes, in water, soaked 1 year folding strength loss≤5%; Deformation rate≤0.5%.
According to the preparation technology of claim 1, it is characterized in that 3, described anti-water additive has: slag (commercially available, granularity 200 mesh screen residues≤10%); Compound alkaline solution (K
2CO
3Water glass 1: 1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 91107506 CN1071403A (en) | 1991-10-15 | 1991-10-15 | A kind of novel magnesium cement and preparation technology thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 91107506 CN1071403A (en) | 1991-10-15 | 1991-10-15 | A kind of novel magnesium cement and preparation technology thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1071403A true CN1071403A (en) | 1993-04-28 |
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ID=4908843
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 91107506 Pending CN1071403A (en) | 1991-10-15 | 1991-10-15 | A kind of novel magnesium cement and preparation technology thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1071403A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102285784A (en) * | 2011-05-25 | 2011-12-21 | 中国科学院青海盐湖研究所 | Preparation method of novel fiber-reinforced type magnesium cement |
-
1991
- 1991-10-15 CN CN 91107506 patent/CN1071403A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102285784A (en) * | 2011-05-25 | 2011-12-21 | 中国科学院青海盐湖研究所 | Preparation method of novel fiber-reinforced type magnesium cement |
| CN102285784B (en) * | 2011-05-25 | 2012-09-26 | 中国科学院青海盐湖研究所 | Preparation method of novel fiber-reinforced type magnesium cement |
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| Date | Code | Title | Description |
|---|---|---|---|
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C06 | Publication | ||
| PB01 | Publication | ||
| C01 | Deemed withdrawal of patent application (patent law 1993) | ||
| WD01 | Invention patent application deemed withdrawn after publication |