Fracturing propping agent taking power plant waste solid as raw material and preparation method of fracturing propping agent
A fracturing proppant, waste solid technology, applied in chemical instruments and methods, earthwork drilling, drilling composition, etc. and other problems, to meet the needs of oilfield development and production, low water immersion impact, and low production costs
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[0043] The preparation method of above-mentioned fracturing proppant, comprises the following steps:
[0044] After mixing waste solids from power plants and additives, lightly burn them at 900-1000°C, add binders, and grind to obtain mixed powder.
[0045] The mixed powder is made into a spherical shape through a granulator, and after sieving, semi-finished granules are obtained.
[0046] After drying the semi-finished granules with hot air, they are sent to a rotary kiln for baking, and then cooled to obtain the fracturing proppant.
[0047] Preferably, the size of the mixed powder is less than 19um, which can ensure that the raw materials can be fully mixed.
[0048] The particle size of the semi-finished product is 0.106-0.9mm, which is a conventional specification for fracturing proppants.
[0049] Preferably, the light burning temperature is 940°C;
[0050] The hot air drying temperature is 120-130°C.
[0051] Preferably, the baking temperature is 1250±20° C., and th...
Embodiment 1
[0057] Raw materials: 90 parts of waste solids from power plants, 7 parts of adhesives and 3 parts of additives.
[0058] Among them, the waste solids from power plants are made of SiO in Xinjiang 2 Fly ash and slag with a content of more than 70%. The binder is clay mineral. The additive is natural ore with a metal oxide content exceeding 50%; the metal oxide is one or more of manganese oxide, potassium oxide, magnesium oxide and calcium oxide.
[0059] Process such as figure 1 As shown, the specific operation steps are as follows:
[0060] (1) Pretreatment and refinement of raw materials: first mix the fly ash, slag and additives roughly in proportion, then pass through a light-fired kiln at 900-1000°C for 1 hour to remove residual carbon and harmful components, then add viscose The mixture is mixed evenly, sent to a ball mill and ground to below 19um, and the raw material required for production - mixed powder is obtained.
[0061] (2) Granulation: The mixed powder is ...
Embodiment 2
[0068] Raw materials: 88 parts of waste solids from power plants, 8 parts of adhesives and 3.5 parts of additives.
[0069] Among them, the power plant waste solid uses SiO 2 Fly ash and slag with a content of more than 75%. The binder is clay mineral. The additive is natural ore with a metal oxide content exceeding 50%; the metal oxide is one or more of manganese oxide, potassium oxide, magnesium oxide and calcium oxide.
[0070] The specific operation steps are as follows:
[0071] (1) Pretreatment and refinement of raw materials: first mix the fly ash, slag and additives roughly in proportion, then pass through a light-fired kiln at 940°C for about 1 hour to remove residual carbon and harmful components, then add adhesive Mix the agent and send it into a ball mill to grind it below 19um to obtain the raw material required for production - mixed powder.
[0072] (2) Granulation: The mixed powder is made into balls in the granulator (water is sprayed during the ball makin...
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