CN1328198C - Closed dry process of producing semi-hydrated gypsum - Google Patents
Closed dry process of producing semi-hydrated gypsum Download PDFInfo
- Publication number
- CN1328198C CN1328198C CNB2006100124480A CN200610012448A CN1328198C CN 1328198 C CN1328198 C CN 1328198C CN B2006100124480 A CNB2006100124480 A CN B2006100124480A CN 200610012448 A CN200610012448 A CN 200610012448A CN 1328198 C CN1328198 C CN 1328198C
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- water
- condensation
- reliever
- pressure
- water vapor
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- Compounds Of Alkaline-Earth Elements, Aluminum Or Rare-Earth Metals (AREA)
Abstract
The present invention discloses a full-closed dry method of producing calcined gypsum powder. In the gypsum calcination process of the prior art, part of gypsum powder can be discharged, matching dust-removing equipment is needed, factory buildings have large land occupation and investments are large. A water vapor discharge pipe of the existing calcining device is connected into the cooling water in a sealed condensing decompressor. Because water vapor condenses into water and pressure is reduced, the water vapor flows continuously from the calcining device to the condensing decompressor. After the vapor pressure in the calcining device and the pressure of the condensing decompressor approach to balance, the calcining device is opened, and calcined gypsum powder is taken out. The calcining environment is kept in a pressure state, which is favorable for enhancing the compression resistant strength and the breaking resistant strength of calcined gypsum powder products, and the whole production process has no dust emission, so as to save the investment of dust-removing equipment and protect the environment.
Description
Technical field
The present invention relates to the processing technology of gypsum, particularly a kind of method of dry production gesso.
Background technology
Prior art (comprises the plaster of paris and chemical gypsum with plaster stone, the terra alba that its Chemical Composition is) produces in the dry technology for production process of gesso (its Chemical Composition is a calcium sulphate hemihydrate), owing to a hypocrystalline water calcining in the plaster stone Chemical Composition need be sloughed, thereby in powdered plaster stone calcination process, the part terra alba also can be emitted in the time of discharge water steam, form the dust pollution in the production process.Therefore, this mode of production needs supporting huge dust removal installation, and factory building takes up an area of many, and investment is big.In addition, the method for the existing dry production plaster of Paris also exists the lower shortcoming of product resistance to compression and folding strength.
Summary of the invention
The objective of the invention is to overcome the shortcoming of prior art; provide a kind of closed dry to produce the method for gesso; make calcination environment remain under the bigger pressure state; not only help improving the resistance to compression and the folding strength of gesso product; and there is not dust discharge in the what is more important whole process of production; both save the investment of dust removal installation, protected environment again.
Task of the present invention is achieved through the following technical solutions:
The present invention is the water vapor discharge tube with the plaster stone roasting assembly of prior art, inserts in a kind of water vapor condensation reliever, rather than as existing gypsum dry technology for production, the water vapor discharge tube is inserted in the dust removal installation.Condensation reliever of the present invention is an airtight container, and the water coolant that accounts for container volume 65% wherein is housed, and the water vapor discharge tube of roasting assembly is exactly directly to insert in the water coolant.There is the instrument that shows water temperature condensation reliever outside, the condensation reliever a water inlet pipe and water shoot arranged respectively up and down, and have valve to control, and inlet pipe, drain pipe all communicate with the factory water precipitation pond of drying in the air outward to them.The water that dries in the air in the water precipitation pond can inject the condensation reliever by the water inlet pipe water that temperature is lower, and temperature then can flow into the water precipitation pond of drying in the air by water shoot than higher water in the condensation reliever.In the production process of gesso, water vapor in the roasting assembly carries a part of terra alba and enters the condensation reliever by discharge tube, because the temperature in the condensation reliever is well below 100, therefore, the water vapor that enters the condensation reliever from roasting assembly is condensed into water soon, its pressure is subtracted greatly, the pressure of vapor pressure in the gypsum calcining apparatus in the condensation reliever like this, the water vapor in the roasting assembly will enter in the condensation reliever continuously.Continuity along with calcination time, vapor pressure in roasting assembly is increased by low, reduce (pressure of pressure in the roasting assembly and condensation reliever is near balance) by height again, just illustrating in the plaster stone that water vapor that a hypocrystalline water changes into has discharged finishes, and plaster stone has been sintered into gesso.At this time just can open roasting assembly, take out gesso.
The present invention is with respect to existing gesso dry technology for production, bigger pressure state of its calcination environment person of remaining, not only help improving the resistance to compression of gesso product and the intensity of anti-folding, and what is more important is in the gesso dry technology for production, can not re-use huge dust removal installation, and not having dust discharge in the assurance whole process of production, investment and the factory building of having saved dust removal installation take up an area of, and also help energy-conservation and environmental protection.
Description of drawings
Fig. 1 is a device synoptic diagram of the present invention.
Also the present invention is further illustrated in conjunction with the accompanying drawings below by embodiment.
Embodiment
A kind of closed dry is produced the method for gesso, comprise plaster stone is put into roasting assembly 1 dehydration, it is characterized in that water vapor discharge tube 2 with described roasting assembly 1 inserts in a kind of water coolant 4 of airtight condensation reliever 3, water vapor condensation Cheng Shui, pressure relief, water vapor constantly enters the condensation reliever 3 from roasting assembly 1 in a steady stream, after the pressure of vapor pressure in the roasting assembly 1 and condensation reliever 3 is near balance, opens roasting assembly and takes out gesso.
The water coolant 4 of described airtight condensation reliever accounts for 65% of container volume, the water vapor discharge tube 2 of roasting assembly directly inserts in the water coolant 4, there is water temperature gauge 10 outside of airtight condensation reliever, the top of airtight condensation reliever is provided with water inlet pipe 6, the bottom of airtight condensation reliever is provided with water shoot 8, water inlet pipe is provided with by-pass valve control 7, and water shoot is provided with by-pass valve control 9, and water inlet pipe 6, water shoot 8 communicate with the peripheral hardware water precipitation pond 5 of drying in the air respectively.
Claims (4)
1, a kind of closed dry is produced the method for gesso, comprise that plaster stone is put into roasting assembly to dewater, it is characterized in that: described method is that the water vapor discharge tube of described roasting assembly is directly inserted in a kind of water coolant of airtight condensation reliever, water vapor condensation Cheng Shui, pressure relief, water vapor constantly enters the condensation reliever from roasting assembly in a steady stream, after the pressure of vapor pressure in the calcination device and condensation reliever is near balance, opens the calcination device and take out gesso.
2, in accordance with the method for claim 1, it is characterized in that: the water coolant in the described airtight condensation reliever accounts for 65% of container volume.
3, in accordance with the method for claim 1, it is characterized in that: there is water temperature gauge the outside of described airtight condensation reliever.
4, in accordance with the method for claim 1, it is characterized in that: the top of described airtight condensation reliever is provided with water inlet pipe, the bottom of condensation reliever is provided with water shoot, and water inlet pipe, water shoot are respectively equipped with by-pass valve control, and communicates with the peripheral hardware water precipitation pond of drying in the air respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006100124480A CN1328198C (en) | 2006-02-23 | 2006-02-23 | Closed dry process of producing semi-hydrated gypsum |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006100124480A CN1328198C (en) | 2006-02-23 | 2006-02-23 | Closed dry process of producing semi-hydrated gypsum |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1810698A CN1810698A (en) | 2006-08-02 |
| CN1328198C true CN1328198C (en) | 2007-07-25 |
Family
ID=36843843
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2006100124480A Expired - Fee Related CN1328198C (en) | 2006-02-23 | 2006-02-23 | Closed dry process of producing semi-hydrated gypsum |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1328198C (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104032043A (en) * | 2014-06-11 | 2014-09-10 | 成都力鑫科技有限公司 | Drying tool set |
| CN107572845A (en) * | 2017-10-11 | 2018-01-12 | 杨朴 | A kind of mould gypsum powder producing method |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4113836A (en) * | 1976-10-29 | 1978-09-12 | National Gypsum Company | Continuous gypsum calcination process and kettle therefor |
| CN87103057A (en) * | 1987-11-21 | 1988-05-18 | 李培基 | Gypsum calcining method and equipment thereof |
| CN2136969Y (en) * | 1992-10-24 | 1993-06-23 | 湖南大学 | Fluidization calcining apparatus for terra alba |
| CN1084499A (en) * | 1992-09-19 | 1994-03-30 | 王学波 | The production method of high-strength hemihydrate gypsum and equipment thereof |
| CN1639082A (en) * | 2002-03-08 | 2005-07-13 | 拉法基石膏公司 | Device for drying and/or firing gypsum |
-
2006
- 2006-02-23 CN CNB2006100124480A patent/CN1328198C/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4113836A (en) * | 1976-10-29 | 1978-09-12 | National Gypsum Company | Continuous gypsum calcination process and kettle therefor |
| CN87103057A (en) * | 1987-11-21 | 1988-05-18 | 李培基 | Gypsum calcining method and equipment thereof |
| CN1084499A (en) * | 1992-09-19 | 1994-03-30 | 王学波 | The production method of high-strength hemihydrate gypsum and equipment thereof |
| CN2136969Y (en) * | 1992-10-24 | 1993-06-23 | 湖南大学 | Fluidization calcining apparatus for terra alba |
| CN1639082A (en) * | 2002-03-08 | 2005-07-13 | 拉法基石膏公司 | Device for drying and/or firing gypsum |
Non-Patent Citations (1)
| Title |
|---|
| 炒制熟石膏粉过程中的除尘 邵锡鹏，劳动保护，第6期 1986 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1810698A (en) | 2006-08-02 |
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Granted publication date: 20070725 Termination date: 20100223 |