CN104140110A - Acidized loess - Google Patents
Acidized loess Download PDFInfo
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- CN104140110A CN104140110A CN201410358770.3A CN201410358770A CN104140110A CN 104140110 A CN104140110 A CN 104140110A CN 201410358770 A CN201410358770 A CN 201410358770A CN 104140110 A CN104140110 A CN 104140110A
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Abstract
The invention discloses acidized loess. According to the technical scheme, ingredients of the acidized loess comprise loess, attapulgite clay, magnesium oxide, sulfuric acid, soluble sodium silicate, polyvinyl alcohol, hydroxypropyl methyl cellulose and sodium carbonate. The ingredients of the acidized loess are conveyed into a mill to be milled into powder, wherein the powdery material obtained after milling is the acidized loess. According to the production method of the acidized loess, the sulfuric acid can be prevented from having chemical reactions with the soluble sodium silicate, the polyvinyl alcohol, the hydroxypropyl methyl cellulose and the sodium carbonate; after the loess is acidized, the pH value is controlled within the range from 5.5 to 7.5, and therefore the utilization ratio of the loess can be increased, good economic benefits, environmental benefits and social benefits can be brought, and the purpose of making waste profitable can be achieved. The acidized loess is good in adsorbability, thixotropy, thermostability, plasticity and cohesiveness and suitable for producing environmental protection materials, garden materials, building materials, foaming agents and fire protection products.
Description
Technical field
The present invention relates to acidification, be specifically related to the loess after a kind of acidifying.
Background technology
Loess is the special type soil forming under arid climatic conditions, is generally pale yellow, sallow or tawny, has visual visible macropore and vertical joints.It is generally acknowledged mainly and deposited by wind now, is often calcareous and often containing shell, bone and mammiferous tooth and calcium carbonate nucleation, sometimes also forms the high-quality soil of water storage in a large number containing ferric oxide tuberculosis.
The mineralogical composition of loess has detrital mineral, clay mineral and authigenic mineral 3 classes.Detrital mineral is mainly quartz, feldspar and mica, accounts for 80% of detrital mineral, and next has pyroxene, hornblende, pistacite, chlorite, magnetite etc.; In addition, in loess, carbonate minerals content is more, is mainly calcite.Clay mineral is mainly illite, montmorillonite, kaolinite, pyrrhosiderite, contains turgite etc.
Loess is a kind of very fertile soil layer, very important to agriculture production.But vegetation rareness, soil erosion, all causes serious harm to agriculture production and engineering construction, needs science to administer.
In order to improve the application quality of loess, need to carry out acidification to loess.
Summary of the invention
The object of the invention is to overcome weak point in prior art, the loess after a kind of acidifying is provided.
Loess batching after acidifying is made up of loess, attapulgite clay, magnesium oxide, sulfuric acid, quick dissolved sodium silicate, polyvinyl alcohol, Vltra tears and sodium carbonate.
The production method of the loess after acidifying: by abrasive dust in the loess batching input grinding machine after acidifying, the meal after abrasive dust is the loess after acidifying.
Because loess is mainly made up of minimum powdered granule, and under dry, semiarid weather condition, they are very not tight in conjunction with obtaining each other, general as long as with the naked eye just can see between particle thering is of all sizes and variform hole and hole, so conventionally loess is called to macroporous soil.It is relevant with the effect of water to loess etc. that porousness that it is generally acknowledged loess is rotted with Diagn, root system of plant, the more important thing is relevant with special weather condition, typical loess porosity is higher, and the porosity of Loessial rock is lower, the present invention selects the loess after pulverizing, particle fineness≤5 millimeter of loess.
Attapulgite clay has unique layer chain-like structure feature, and crystal is needle-like, fibrous or fiber collection shape.Attapulgite clay has unique dispersion, high temperature resistant, the anti-good colloidal property such as saline and alkaline and higher adsorptive power, and has certain plasticity-and cohesive force, and the present invention selects particle fineness≤5 millimeter of attapulgite clay.
Magnesium oxide has the general character of basic oxide, belongs to gelling material, can improve the colloidal property of loess.
It is 98% the vitriol oil that sulfuric acid is selected concentration.
Quick dissolved sodium silicate is white pulverulent material, can be dissolved in fast water, has that cohesive force is strong, intensity is higher, acid resistance, good heat resistance, the feature of alkali resistance and poor water resistance.
Polyethenol series white solid, that external form is divided is cotton-shaped, particulate state, Powdered three kinds; Nonpoisonous and tasteless, particulate state can be dissolved in 80--90 DEG C of water, pulverously after other powders pre-dispersed, can dissolve at normal temperatures.There is good viscosity, polymerizability, cohesiveness and water-retentivity.
Vltra tears has thickening capabilities, salt discharge, pH stability, water-retentivity, dimensional stability, good film-forming properties and the feature such as resistance to enzyme, dispersiveness and cohesiveness widely.
Sodium carbonate has the general character and the thermostability of salt, soluble in water, and its aqueous solution is alkalescence, in the present invention for adjusting the loess pH value after acidifying.
The present invention is achieved by following technical proposals:
1, the batching of the loess after acidifying is made up of following component by weight percentage: loess work in-process 90～98%, quick dissolved sodium silicate 0.1～5%, polyvinyl alcohol 0.1～5%, Vltra tears 0.01～3% and sodium carbonate 0～3% after acidifying.
2, the production method of the loess after acidifying: by abrasive dust in the loess batching input grinding machine after acidifying, particle fineness≤0.074 millimeter, the meal after abrasive dust is the loess finished product after acidifying.
3, the half-finished production method of the loess after acidifying: stir in the stirrer (1) input of the batching of loess mixture having been turned round, then dilute sulphuric acid is slowly added and carries out acidification in loess mixture; (2) by the loess mixture after acidification, push as loess flap thickness≤3 millimeter of loess flap by twin rollers; (3) loess flap is transported to roasting in rotary type stoving oven, roasting time is 1～3 hour, and maturing temperature is controlled at 300～400 DEG C, loess flap water content≤2% after roasting, loess flap after roasting is the loess work in-process after acidifying, and PCm is weight percentage.
4, the batching of loess flap is made up of following component by weight percentage: loess mixture 75～95% and dilute sulphuric acid 5～25%.
5, the batching of loess mixture is made up of following component by weight percentage: loess 68～92%, attapulgite clay 5～30% and magnesium oxide 0.1～3%.
6, the batching of dilute sulphuric acid is made up of following component by weight percentage: the vitriol oil 1～25% that concentration is 98% and water 75～99%, the vitriol oil per-cent that concentration is 98% is weight percentage.
The production method of the loess after acidifying takes first acidifying to carry out compounding ingredient again, can avoid sulfuric acid and quick dissolved sodium silicate, polyvinyl alcohol, Vltra tears and sodium carbonate generation chemical reaction, give full play to raw-material characteristic separately in batching, and obtain complementation, guarantee the loess inner quality after acidifying.
According to the needs of quality product, adopt sodium carbonate to adjust the loess pH value after acidifying, method is simple.
After the acidified processing of loess, pH value is controlled at 5.5～7.5, can improve the utilization ratio of loess, not only can bring good economic benefit, environmental benefit and social benefit, and can realize and turning waste into wealth.
Loess after acidifying has good adsorptivity, thixotropy, thermostability, plasticity-and close-burning feature.
Loess after acidifying is applicable to produce environment-friendly materials, Landscape Material, material of construction, whipping agent and fire product.
Embodiment
Below in conjunction with embodiment, the invention will be further described:
1, the batching of the loess after acidifying is made up of following component by weight percentage: loess work in-process 96.5%, quick dissolved sodium silicate 1.5%, polyvinyl alcohol 1.4%, Vltra tears 0.58% and sodium carbonate 0.02% after acidifying.
2, the production method of the loess after acidifying: by abrasive dust in the loess batching input grinding machine after acidifying, particle fineness≤0.074 millimeter, the meal after abrasive dust is the loess finished product after acidifying.
3, the half-finished production method of the loess after acidifying: stir in the stirrer (1) input of the batching of loess mixture having been turned round, then dilute sulphuric acid is slowly added and carries out acidification in loess mixture; (2) by the loess mixture after acidification, push as loess flap thickness≤3 millimeter of loess flap by twin rollers; (3) loess flap is transported to roasting in rotary type stoving oven, roasting time is 2 hours, and maturing temperature is controlled at 300～350 DEG C, loess flap water content≤2% after roasting, and the loess flap after roasting is the loess work in-process after acidifying.
4, the batching of loess flap is made up of following component by weight percentage: loess mixture 78% and dilute sulphuric acid 22%.
5, the batching of loess mixture is made up of following component by weight percentage: loess 84%, attapulgite clay 14% and magnesium oxide 2%.
6, the batching of dilute sulphuric acid is made up of following component by weight percentage: the vitriol oil 4% that concentration is 98% and water 96%.
Claims (7)
1. the loess after an acidifying, it is characterized in that, the loess batching after acidifying is made up of following component by weight percentage: loess work in-process 90～98%, quick dissolved sodium silicate 0.1～5%, polyvinyl alcohol 0.1～5%, Vltra tears 0.01～3% and sodium carbonate 0～3% after acidifying.
2. the production method of the loess after acidifying according to claim 1, is characterized in that, by abrasive dust in the loess batching input grinding machine after acidifying, and particle fineness≤0.074 millimeter, the meal after abrasive dust is the loess finished product after acidifying.
3. the half-finished production method of loess after acidifying according to claim 1, is characterized in that, stirs, then dilute sulphuric acid is slowly added and in loess mixture, carries out acidification in the stirrer (1) input of the batching of loess mixture having been turned round; (2) by the loess mixture after acidification, push as loess flap thickness≤3 millimeter of loess flap by twin rollers; (3) loess flap is transported to roasting in rotary type stoving oven, roasting time is 1～3 hour, and maturing temperature is controlled at 300～400 DEG C, loess flap water content≤2% after roasting, and the loess flap after roasting is the loess work in-process after acidifying.
4. the batching of loess flap according to claim 3, is characterized in that, the batching of loess flap is made up of following component by weight percentage: loess mixture 75～95% and dilute sulphuric acid 5～25%.
5. the batching of loess mixture according to claim 4, is characterized in that, the batching of loess mixture is made up of following component by weight percentage: loess 68～92%, attapulgite clay 5～30% and magnesium oxide 0.1～3%.
6. the batching of dilute sulphuric acid according to claim 4, is characterized in that, the batching of dilute sulphuric acid is made up of following component by weight percentage: the vitriol oil 1～25% that concentration is 98% and water 75～99%.
7. the batching of loess mixture according to claim 5, is characterized in that, selects particle fineness≤5 millimeter of loess, particle fineness≤5 millimeter of attapulgite clay.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410358770.3A CN104140110B (en) | 2014-07-27 | 2014-07-27 | Loess after acidifying |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410358770.3A CN104140110B (en) | 2014-07-27 | 2014-07-27 | Loess after acidifying |
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| CN104140110A true CN104140110A (en) | 2014-11-12 |
| CN104140110B CN104140110B (en) | 2015-12-02 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108277795A (en) * | 2016-06-22 | 2018-07-13 | 张耀 | A kind of method of acid adding presoaking processing non-self centred graph ground |
| CN112812587A (en) * | 2021-01-08 | 2021-05-18 | 深圳市锦昊辉实业发展有限公司 | Active nano calcium, preparation method thereof and application thereof in preparation of silicone sealant |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101708455A (en) * | 2009-12-08 | 2010-05-19 | 许庆华 | Attapulgite oil-suction purifying agent |
-
2014
- 2014-07-27 CN CN201410358770.3A patent/CN104140110B/en active Active
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101708455A (en) * | 2009-12-08 | 2010-05-19 | 许庆华 | Attapulgite oil-suction purifying agent |
Non-Patent Citations (3)
| Title |
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| 万建华等: "热活化黄土胶凝性能研究", 《稀有金属材料与工程》 * |
| 吕擎峰等: "温度改性水玻璃固化黄土机制研究", 《岩土力学》 * |
| 邓津等: "黄土抗震陷变形的酸改性方法及其微观结构分析", 《岩土力学》 * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108277795A (en) * | 2016-06-22 | 2018-07-13 | 张耀 | A kind of method of acid adding presoaking processing non-self centred graph ground |
| CN108277795B (en) * | 2016-06-22 | 2019-11-15 | 张耀 | A kind of method of acid adding presoaking processing non-self centred graph ground |
| CN112812587A (en) * | 2021-01-08 | 2021-05-18 | 深圳市锦昊辉实业发展有限公司 | Active nano calcium, preparation method thereof and application thereof in preparation of silicone sealant |
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| Publication number | Publication date |
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| CN104140110B (en) | 2015-12-02 |
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