Petroleum fracturing propping agent production line and petroleum fracturing propping agent production process

Abstract

The invention relates to the technical field of wet solid-solid separation equipment and methods, and particularly relates to a petroleum fracturing propping agent production line and a petroleum fracturing propping agent production process. The production line comprises a feeding system, a pretreatment system, a primary sorting system and a secondary sorting system; the feeding system is used forcontinuously supplying mortar raw material to a sorting device from a mortar source, the pretreatment system is used for carrying out operations including but not limited to dehydration, concentration, impurity removal, swaging and lifting on the mortar raw material supplied by the feeding system, the primary sorting system is used for carrying out coarse product sorting on the mortar treated bythe pretreatment system, the secondary sorting system is used for carrying out fine product sorting on the mortar sorted by the primary sorting system. The production line and the production process have the beneficial effects that the water flow direction is improved according to different requirements, independent hydrocyclone separation or settling separation is realized, and a separation modeof combining the hydrocyclone separation and the settling separation can also be realized, and the machine has multiple functions, and the operation is simple.

Description

technical field [0001] The invention relates to the technical field of wet solid-solid separation equipment and methods, in particular to a production line and production process of a proppant for oil fracturing. Background technique [0002] In recent years, silica sand (quartz sand) has been widely used in glass, foundry and other industrial sectors, but before application, it generally needs to be classified or deslimed. Quartz sand is an important industrial mineral raw material, widely used in glass, casting, metallurgy, chemical industry, abrasives and other industrial fields. The production of quartz sand is mostly obtained by crushing and grading quartzite ore. Of course, in areas rich in natural sand resources, the sand source can be directly mined. The production process of quartz sand has two kinds of wet production and dry production. Quartz sand as glass raw material is mainly produced by wet process. Wet process production has the following advantages: high ...

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Problems solved by technology

[0006] Technical problem 1: Silica sand is widely used. In different application occasions, the requirements for the particle size (mesh number, particle size) of the sand are also different, and the requirements for the particle size concentration ratio of each brand of silica sand are also different, especially in the scale In the process of mass production, the demand for quantity may be greater than the requirement for precision

[0007] Technical problem 2: In the process of separating sand by hydraulic classification, firstly, the sand in the water production line is divided into three categories, namely floating layer, suspended layer and sinking bottom layer, which occupy the upper, middle and lower layers of the sorting container

The disadvantage is: hydraulic classification is based on the characteristics of water flow to achieve the separation of particles of different particle sizes, so the density, shape and sedimentation conditions of the particles have an impact on the sedimentation velocity, and the cross-sectional size of the equipment is affected by factors such as power consumption in design Therefore, the phenomenon of particle group mixing is serious during classification, and there are problems such as large power consumption, low separation accuracy and low processing capacity per unit area.

However, among the currently known sorting devices, the mortar feed pipe in the monomer classifier (referring to the barrel of a single sorting device) has no matching relationship with the water supply pipe, so that the fed mortar continuously destroys the established and maintained structure in the barrel. The balance of the dispersion system affects the classification effect

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