Oil fracturing proppant reuse analysis

As technology continues to improve the level of human solid waste generated has also increased a lot of solid waste piling up posing a great threat for the survival of the environment. Solid waste generally refers to the processing and circulation of human consumption in the production process and access to life and other discarded after the target component solids and mud-like substance. According to management needs can be divided into three categories: namely, industrial solid waste and hazardous solid waste in municipal waste. Storage of these wastes not only take up a lot of land and stacked solid dust arising caused great harm to the environment. The utilization of solid waste on the current development of China's circular economy has an important significance. For the preparation of oil  Fracturing proppant  industrial waste refers to a high content of useful components such as alumina, silica, industrial solid wastes such as red mud fly ash ceramic roller production wastes. Preparation of the adoption of these solid waste oil fracturing proppant that can be salvaged and can protect the environment is the development of oil fracturing proppant in one direction. Red mud is generated during the production of alumina bauxite solid waste produced annually worldwide is estimated about 60 million T red mud. Oil fracturing proppant of red mud annually more than 400 million t National Huang accumulated stacked 2000000000 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 and other pollutants in the soaking and alkali soils under the influence will be a substantial source of pollution of groundwater leaching; solid powder can also cause dust pollution 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 combined with other materials such as fly ash gangue add a small amount of admixture preparation of the new ceramic.

The prepared ceramic particle density rating of 600 anti-stress 410N cylinder compressive strength equal to 5.5MPa. Chinese patent application discloses a "red mud was prepared using the acid fracturing proppant Methods" quality of raw material percentage: 20% of red mud to 60% aluminum material 20% to 60% barium-containing substance 5% to 5% plasticizer 5 % ~ 15%. Acid fracturing proppant preparation process is to red mud and aluminum-containing substance is placed in a ball mill grinding to a certain intensity of the powder followed by the addition of barium-containing material made of semi-plasticizer mixture milled particles sintered at 1200 to 1400 degrees 1 ~ 3h from. Tian et al carried out using a distinctive red mud pressure acid preparation proppant main raw material used in the study of red mud waste refractory barium carbonate plasticizer. Studies suggest that: increase the acid resistance of  Proppant  during sintering due to the formation of monoclinic celsian BaAl2Si2O8. Ceramic rollers are ceramic rollers waste in the production process of waste produced by the domestic ceramic rod scrap production and use of each fracture roll bar about 8000 ~ 10000t. Ceramic rollers chemical waste alumina content greater than 60% with ceramic sticks or industrial scrap substitute quality bauxite alumina powder prepared by oil fracturing proppant can either reduce production costs can guarantee the quality of fly ash is pulverized in fuel in power plants and other boilers, industrial waste discharged in the chemical composition of the content of SIO2 most (45% to 60%), followed AL2O3 (18% ~ 40%) of as small amount of remaining Fe2O3] CaOMgOK2O LOI like.

INNER fly ash as the main raw material doped with a certain amount of clay and a small amount of pore-forming agent, and water by allowing mixing of microspheres made of high-temperature roasting two Lytag fluoridated water except for analog fluorine treatment. Poke Guanjie other trial of the high fly ash sintered ceramic ceramic with a light density, high strength low thermal conductivity refractory impermeability absorbing chemical stability is good. However, because of low intensity can not be used because this ceramic oil fracturing proppant.