SU94055A1 - Method for the production of the retarder setting gypsum - Google Patents
Method for the production of the retarder setting gypsumInfo
- Publication number
- SU94055A1 SU94055A1 SU434292A SU434292A SU94055A1 SU 94055 A1 SU94055 A1 SU 94055A1 SU 434292 A SU434292 A SU 434292A SU 434292 A SU434292 A SU 434292A SU 94055 A1 SU94055 A1 SU 94055A1
- Authority
- SU
- USSR - Soviet Union
- Prior art keywords
- production
- gypsum
- retarder
- setting gypsum
- retarder setting
- Prior art date
Links
Landscapes
- Compounds Of Alkaline-Earth Elements, Aluminum Or Rare-Earth Metals (AREA)
Description
Предлагаемый способ производства замедлител схватывани гипса из древесных опилок отличаетс тем, что опилки подвергают гидролизу при повышенном давлении в автоклаве в присутствии кислоты. Полученна масса нейтрализуетс углекислым кальцием и подвергаетс сушке и помолу.The proposed method for producing a retarder for setting gypsum from sawdust is characterized in that the sawdust is subjected to hydrolysis under increased pressure in the autoclave in the presence of acid. The resulting mass is neutralized with calcium carbonate and dried and ground.
Дл гидролиза древесны.ч опилок примен етс серна 2%-на кислота , а давление в автоклаве повышаетс до 8 атм.Sulfuric acid 2% is used to hydrolyze wood chips and the pressure in the autoclave rises to 8 atm.
Сушку производ т при температуре выше 170°, и просушенный порогиок дополнительно подвергают номолу в мельнице, например шаровой .Drying is carried out at a temperature above 170 °, and the dried threshold is additionally subjected to nomolum in a mill, such as a ball.
Полученный замедлитель схватывани гипса хорошо раствор етс в холодной воде, поэтому его можно вводить с перемешиванием в воду, идушую дл затворени гипса .The resulting gypsum setting retarder dissolves well in cold water, so it can be injected with stirring into water, and then mixed to set gypsum.
Нормальный расход замедлител 0,2-0,3% от веса гинса. Дл замедлени схватывани гипса на 30- 40 мин. нужно вводить замедлитель в количестве около 0,5%.The normal consumption of the moderator is 0.2-0.3% of the weight of the gyns. To slow down the setting of gypsum by 30-40 minutes. It is necessary to introduce a retarder in an amount of about 0.5%.
Применение предложенного замедлител повышает пластичность и водоудерживаюш.ую способностьThe use of the proposed retarder increases the plasticity and water retention ability
гипсового теста.gypsum dough.
Предмет изобретени Subject invention
Способ производства замедлител схватывани гипса из древесных опилок. отличаюн.ийс тем, что опилки подвергают гидролизу в автоклаве при повышенном давлении в присутствии кислоты с дальнейп е; 1 нейтрализацией полученной массы углекислым кальцием , и полученный продукт подвергают сушке и помолу.Method for the production of a retarder setting gypsum from sawdust. the difference is that sawdust is subjected to hydrolysis in an autoclave at elevated pressure in the presence of acid with further e; 1 by neutralizing the resulting mass with calcium carbonate, and the resulting product is subjected to drying and grinding.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SU434292A SU94055A1 (en) | 1919-09-04 | 1919-09-04 | Method for the production of the retarder setting gypsum |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SU434292A SU94055A1 (en) | 1919-09-04 | 1919-09-04 | Method for the production of the retarder setting gypsum |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| SU94055A1 true SU94055A1 (en) | 1951-11-30 |
Family
ID=48369373
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| SU434292A SU94055A1 (en) | 1919-09-04 | 1919-09-04 | Method for the production of the retarder setting gypsum |
Country Status (1)
| Country | Link |
|---|---|
| SU (1) | SU94055A1 (en) |
-
1919
- 1919-09-04 SU SU434292A patent/SU94055A1/en active
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