Oil Fracturing proppant material Discussion

For the preparation of oil  Fracturing proppant  industrial waste refers to a higher content of alumina, silica and other useful components of industrial solid wastes such as red mud, fly ash, ceramic roller production wastes. Preparation of the adoption of these solid waste oil  frac proppant  that can be salvaged, but also protect the environment, the development of oil  fracturing proppant in one direction.
Red mud is generated during the production of alumina bauxite solid waste, it is estimated that the world produces about 60 million annually T red mud. Of red mud annually more than 400 million t, the national total of stacked 2,000,000,000 yellow t, but the comprehensive utilization rate is only about 15%. Red mud piled up a lot of land and farmland, consume more stacked construction and maintenance costs, and red mud fluoride, alkali and other pollutants in the immersion will be a lot lower dissolution and leaching, pollution of groundwater sources; solid powder will cause dust pollution affecting the ecological environment and human health. Red mud  ceramic proppant  has been preparing related reports, Yin Guoxun such as the use of red mud as main raw material, supplemented by fly ash, coal gangue and other materials, add a small amount of additives, prepared a new ceramic.
The prepared ceramic density rating of 600, particle anti-stress 410N, cylinder compressive strength equal to 5. 5MPa. Chinese patent application discloses a "red mud acid  fracturing proppant  preparation methods," the percentage of raw material quality: red mud 20% to 60%, aluminum 20% to 60% of the material, barium-containing substance 5% to 5%, 5% to 15% plasticizer. Acid fracturing proppant preparation process is to red mud and aluminum-containing substance is placed in a ball mill grinding, get a certain intensity of the powder, followed by addition of barium-containing substances, plasticizers milling mixing, semi-finished products made ??of particles, in 1200 ~ 1400 degrees from sintering 1 ~ 3h.