| 摘要 |
The group of the inventions belongs to fabrication of fireproof granulated materials designed for the use as propping agents (prop) during oil and gas production by the way of hydraulic fracturing of the shelf. The task of the inventions is to reduce the price of granules, simplify their manufacturing technique, achieve stability of product properties. Composition and manufacturing method of the mixture and granules is new. The kaolin containing Al 2 O 3 within the range of 40-45 wt. % and not more than 5 % of free quartz, and bauxite with the content of Al 2 O 3 with not less than 60 wt. % of Al 2 O 3 is used. Preliminary roasting of kaolin is implemented at the temperature of 1400-1500 °C to water absorption not more than 5%, preliminary roasting of bauxite is implemented at the temperature over 1100 °C. Roasting of dried granules is implemented at the temperature of 1500-1700 °C, at that, the following ingredients ratio is chosen, wt.%: roasted kaolin - 33-67; roasted bauxite - the rest, and the amount of Al 2 O 3 in the mixture is not less 50%. The temperature of preliminary roasting of bauxite depends on its chemical composition. Theoretical grounds and experimental data about production and testing of granules are listed. The inventions are implemented in industrial scopes at the patent applicant enterprise.
3 independent formula item, 2 dependant formula item., 2 tables, bibliography - 5. |
