CN105293961A - Method for preparation of building gypsum powder from phosphogypsum - Google Patents
Method for preparation of building gypsum powder from phosphogypsum Download PDFInfo
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- CN105293961A CN105293961A CN201510814760.0A CN201510814760A CN105293961A CN 105293961 A CN105293961 A CN 105293961A CN 201510814760 A CN201510814760 A CN 201510814760A CN 105293961 A CN105293961 A CN 105293961A
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- phosphogypsum
- building gypsum
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- gypsum plaster
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Abstract
The invention discloses a method for preparation of building gypsum powder from phosphogypsum. The method comprises the steps of: (1) firstly grinding phosphogypsum raw material; and (2) calcining the ground phosphogypsum raw material to obtain building gypsum powder. By adopting the improved technology of the invention, the calcined phosphogypsum has no need for grinding, the final grain size is also close to that of the traditional process, but no fresh surface appears. Therefore, the gypsum hydration is uniform, the compactness is high and the strength is high.
Description
Technical field
The present invention relates to material of construction, particularly relate to a kind of method that building gypsum plaster prepared by phosphogypsum.
Background technology
Along with the development of Phosphate Fertilizer Industry, pile up like a mountain for its by product phosphogypsum, often produces the phosphogypsum that 1 ton of phosphoric acid by wet process about discharges 4.5-5.5 ton.Storing up of phosphogypsum not only take a large amount of soil, and severe contamination underground water and surrounding enviroment, needs attention to implement its utilization ways.Identical with other industry by-product gypsums, the main component in phosphogypsum is terra alba, and content is higher, generally reaches more than 90%, is a kind of important renewable resource, and the resource utilization of building materials realizes its main approach effectively utilized.
At present, it is the most effectual way realizing most industry by-product gypsum utilization of resources that building gypsum plaster is prepared in calcining, and reason ascribes to: (1) calcining amount is huge, and utilising efficiency is high; (2) equipment is simple, and calcining cost is low.In recent years, domestic gradually appearance much utilizes industry by-product gypsum calcining to prepare building gypsum plaster manufacturer, raw material coverage is wider, comprise desulfurated plaster, citric acid gypsum, titanium gypsum, fluorgypsum etc., without the need to carrying out special processing before the calcining of these by-product gypsums, the building gypsum plaster performance adopting traditional calcining-grinding preparation technology to produce is also comparatively stable.But for phosphogypsum, due to the existence of the impurity such as phosphorus, fluorine, organic matter, often there is the bad results such as time of coagulation is long, intensity is too low in the building gypsum plaster that traditional preparation technology produces, seriously governs the extensive application of phosphogypsum.Trace it to its cause, mainly because calcium phosphate, Calcium Fluoride (Fluorspan) and organic matter are easily adsorbed in semi-hydrated gypsum surface, hinder the aquation of semi-hydrated gypsum, have impact on the development of intensity.
A lot of producer, in order to remove the detrimental impurity in phosphogypsum, usually can take suitable pre-treatment to phosphogypsum, comprise: the methods such as washing, limestone vegetation, flotation.Washing process more complicated, investment is very large, and water consumption is all higher with energy consumption, and the sewage after washing can discharge after having to pass through process, and this pretreatment technology does not have good competitive capacity; Limestone vegetation technique adopts the acid in inexpensive limestone vegetation phosphogypsum, is combined forms indissoluble thing with titanium pigment, fluorine, and technique simply, is invested less, and do not produced pollution, but phosphogypsum performance after processing is not good; Flotation process mainly eliminates the impact of organic impurity on phosphogypsum, generally can coordinate with other technique and implement.Although these treatment processs suitably can improve the performance that building gypsum plaster prepared by phosphogypsum, but technique is comparatively complicated, run in the opposite direction with the simple feature of calcining plaster of Paris powder craft, and due to factors such as facility investment and blowdown process, also bring certain economy and environment burden.Therefore, need to find the processing method that building gypsum plaster is prepared in a kind of simple and effective phosphogypsum calcining, meet the production and construction demand of gypsum for building powder.
Summary of the invention
For above-mentioned the deficiencies in the prior art part, the problem that the present invention solves is: provide a kind of simple and building gypsum plaster method prepared by the building gypsum plaster intensity produced is high phosphogypsum.
For solving the problem, the technical scheme that the present invention takes is as follows:
Building gypsum plaster method prepared by a kind of phosphogypsum, comprises the following steps: (1) first carries out grinding to phosphogypsum raw material.(2) the phosphogypsum raw material after grinding is carried out calcining and obtain building gypsum plaster.
Further, the time of the phosphogypsum grinding in step (1) is 3 ~ 18min.
Further, the particle meso-position radius after the phosphogypsum grinding in step (1) is 35 ~ 55 μm.
Further, in step (2), calcining temperature is 100 ~ 230 DEG C; Calcination time is 2 ~ 8h.
Further, the meso-position radius of the building gypsum plaster obtained after described step (2) calcining is 15 ~ 35 μm.
Beneficial effect of the present invention
Calcination stage in traditional technology and the precedence in grinding stage just adjust by this preparation method of the present invention, but create beat all technique effect, the present invention, without the need to carrying out pre-treatment to phosphogypsum, does not add any technique yet, does not increase cost of investment.In traditional technology, the gypsum after calcining needs to carry out certain grinding, causes occurring many unsalted surfaces, and the surface energy on each surface of gypsum particle there will be difference, and then causes the aquation of gypsum particle uneven, and gypsum slurry compactness extent is lower, and therefore intensity is lower; And after adopting improving technique, the gypsum after calcining is without the need to carrying out grinding, close also with traditional technology of its ultimate size, but there will not be unsalted surface, therefore the aquation of gypsum is comparatively even, and compactness is high, and intensity is higher.
Embodiment
Below content of the present invention is described in further detail.
Embodiment 1
Building gypsum plaster method prepared by a kind of phosphogypsum, comprises the following steps: (1) first carries out grinding to phosphogypsum raw material.The time of phosphogypsum grinding is 3min.Particle meso-position radius after phosphogypsum grinding is 35 μm.(2) the phosphogypsum raw material after grinding is carried out calcining and obtain building gypsum plaster.Calcining temperature is 115 DEG C.Calcination time is 8h.The meso-position radius of the building gypsum plaster obtained after calcining is 23.35 μm.
The intensity contrast of building gypsum plaster prepared by the intensity of the building gypsum plaster adopting the method for the present embodiment to prepare and existing technique is as follows:
Embodiment 2
Building gypsum plaster method prepared by a kind of phosphogypsum, comprises the following steps: (1) first carries out grinding to phosphogypsum raw material.The time of phosphogypsum grinding is 14min.Particle meso-position radius after phosphogypsum grinding is 38 μm.(2) the phosphogypsum raw material after grinding is carried out calcining and obtain building gypsum plaster.Calcining temperature is 135 DEG C.Calcination time is 6h.The meso-position radius of the building gypsum plaster obtained after calcining is 20.34 μm.
The intensity contrast of building gypsum plaster prepared by the intensity of the building gypsum plaster adopting the method for the present embodiment to prepare and existing technique is as follows:
Embodiment 3
Building gypsum plaster method prepared by a kind of phosphogypsum, comprises the following steps: (1) first carries out grinding to phosphogypsum raw material.The time of phosphogypsum grinding is 11min.Particle meso-position radius after phosphogypsum grinding is 40 μm.(2) the phosphogypsum raw material after grinding is carried out calcining and obtain building gypsum plaster.Calcining temperature is 155 DEG C.Calcination time is 4h.The meso-position radius of the building gypsum plaster obtained after calcining is 25.53 μm.
The intensity contrast of building gypsum plaster prepared by the intensity of the building gypsum plaster adopting the method for the present embodiment to prepare and existing technique is as follows:
Embodiment 4
Building gypsum plaster method prepared by a kind of phosphogypsum, comprises the following steps: (1) first carries out grinding to phosphogypsum raw material.The time of phosphogypsum grinding is 8min.Particle meso-position radius after phosphogypsum grinding is 48 μm.(2) the phosphogypsum raw material after grinding is carried out calcining and obtain building gypsum plaster.Calcining temperature is 175 DEG C.Calcination time is 3h.The meso-position radius of the building gypsum plaster obtained after calcining is 21.37 μm.
The intensity contrast of building gypsum plaster prepared by the intensity of the building gypsum plaster adopting the method for the present embodiment to prepare and existing technique is as follows:
Embodiment 5
Building gypsum plaster method prepared by a kind of phosphogypsum, comprises the following steps: (1) first carries out grinding to phosphogypsum raw material.The time of phosphogypsum grinding is 18min.Particle meso-position radius after phosphogypsum grinding is 52 μm.(2) the phosphogypsum raw material after grinding is carried out calcining and obtain building gypsum plaster.Calcining temperature is 200 DEG C.Calcination time is 2h.The meso-position radius of the building gypsum plaster obtained after calcining is 27.83 μm.
The intensity contrast of building gypsum plaster prepared by the intensity of the building gypsum plaster adopting the method for the present embodiment to prepare and existing technique is as follows:
The foregoing is only preferred embodiment of the present invention, not in order to limit the present invention, within the spirit and principles in the present invention all, any amendment done, equivalent replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (5)
1. a method for building gypsum plaster prepared by phosphogypsum, it is characterized in that, comprises the following steps: (1) first carries out grinding to phosphogypsum raw material.(2) the phosphogypsum raw material after grinding is carried out calcining and obtain building gypsum plaster.
2. the method for building gypsum plaster prepared by phosphogypsum according to claim 1, it is characterized in that, the time of the phosphogypsum grinding in step (1) is 3 ~ 18min.
3. the method for building gypsum plaster prepared by phosphogypsum according to claim 2, it is characterized in that, the particle meso-position radius after the phosphogypsum grinding in step (1) is 35 ~ 55 μm.
4. the method for building gypsum plaster prepared by phosphogypsum according to claim 1, it is characterized in that, in step (2), calcining temperature is 100 ~ 230 DEG C; Calcination time is 2 ~ 8h.
5. the method for building gypsum plaster prepared by phosphogypsum according to claim 4, it is characterized in that, the meso-position radius of the building gypsum plaster obtained after described step (2) calcining is 15 ~ 35 μm.
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| CN201510814760.0A CN105293961A (en) | 2015-11-23 | 2015-11-23 | Method for preparation of building gypsum powder from phosphogypsum |
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| CN201510814760.0A CN105293961A (en) | 2015-11-23 | 2015-11-23 | Method for preparation of building gypsum powder from phosphogypsum |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106747144A (en) * | 2017-01-20 | 2017-05-31 | 南通苏宝建筑节能科技有限公司 | A kind of single ply waterproofing decoration mortar |
| CN107674483A (en) * | 2017-10-17 | 2018-02-09 | 合肥工业大学 | A kind of Ardealite putty powder prepared by ardealite |
| CN110282892A (en) * | 2019-08-13 | 2019-09-27 | 云南磷化集团有限公司 | A kind of phosphogypsum for production of thistle board shortens the preprocess method of setting time |
| CN114455864A (en) * | 2022-02-12 | 2022-05-10 | 贵州宏安升建材有限公司 | Process for preparing building gypsum powder from phosphogypsum |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1872765A (en) * | 2006-06-06 | 2006-12-06 | 宁夏建筑材料研究院 | Method for producing architectural gypsum powder by using phosphogypsum |
| CN101348341A (en) * | 2008-09-16 | 2009-01-21 | 孙小力 | Manufacturing method for producing construction gypsum from boiler tail gas |
| US7585485B2 (en) * | 2006-07-03 | 2009-09-08 | Tripoliven, C.A. | Process for the physiochemical conditioning of chemical gypsum or phospho-gypsum for use in formulation for cement and other construction materials |
| CN101597147A (en) * | 2009-07-06 | 2009-12-09 | 贵州安捷能建筑材料发展有限公司 | The processing method of a kind of phosphogypsum, desulphurization gypsum for preparing high strength plaster of Paris |
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2015
- 2015-11-23 CN CN201510814760.0A patent/CN105293961A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1872765A (en) * | 2006-06-06 | 2006-12-06 | 宁夏建筑材料研究院 | Method for producing architectural gypsum powder by using phosphogypsum |
| US7585485B2 (en) * | 2006-07-03 | 2009-09-08 | Tripoliven, C.A. | Process for the physiochemical conditioning of chemical gypsum or phospho-gypsum for use in formulation for cement and other construction materials |
| CN101348341A (en) * | 2008-09-16 | 2009-01-21 | 孙小力 | Manufacturing method for producing construction gypsum from boiler tail gas |
| CN101597147A (en) * | 2009-07-06 | 2009-12-09 | 贵州安捷能建筑材料发展有限公司 | The processing method of a kind of phosphogypsum, desulphurization gypsum for preparing high strength plaster of Paris |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106747144A (en) * | 2017-01-20 | 2017-05-31 | 南通苏宝建筑节能科技有限公司 | A kind of single ply waterproofing decoration mortar |
| CN107674483A (en) * | 2017-10-17 | 2018-02-09 | 合肥工业大学 | A kind of Ardealite putty powder prepared by ardealite |
| CN110282892A (en) * | 2019-08-13 | 2019-09-27 | 云南磷化集团有限公司 | A kind of phosphogypsum for production of thistle board shortens the preprocess method of setting time |
| CN110282892B (en) * | 2019-08-13 | 2021-04-27 | 云南磷化集团有限公司 | Pretreatment method for shortening setting time of phosphogypsum for producing gypsum plasterboard |
| CN114455864A (en) * | 2022-02-12 | 2022-05-10 | 贵州宏安升建材有限公司 | Process for preparing building gypsum powder from phosphogypsum |
| CN114455864B (en) * | 2022-02-12 | 2022-08-30 | 贵州宏安升建材有限公司 | Process for preparing building gypsum powder from phosphogypsum |
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