How To Produce The Frac Sand | LZZG

What is Frac Sand

Frac sand is a kind of high-purity quartz sand with super compressive resistance and extremely high roundness. After being crushed artificially, this substance is mainly used in the petroleum industry. Especially in the application of hydraulic fracturing, that is, using a high-pressure water pump to inject fracturing fluid into an oil and gas reservoir to fragment the reservoir to obtain oil and gas resources, frac sand is an indispensable substance. Most of the quartz sand comes from high-purity quartz sandstone, but there are also some substitutes for quartz sand, such as ceramic and metal particles. The former comes from bauxite and the latter comes from aluminum products.

How To Produce Frac Sand

Crushing

High-purity quartz sandstone is the main source of frac sand. Quartz sandstone has undergone long-term weathering and denudation. Except for the quartz mineral particles, almost all other minerals in the original rock have been weathered and eroded. At the same time, the quartz particles have extremely high roundness, which are indispensable conditions for the production of frac sand. Quartz sand passes through crushing equipment to produce frac sand with different diameters. According to different uses, the diameter of frac sand is mostly in the range of 0.1 to 2.0 mm. Most of them are concentrated in the range of 0.4 to 0.8 mm.

Screening

The crushed frac sand needs to be screened with a vibrating screen. It mainly divides the crushed finished products into varieties, and its main production equipment is a vibrating screen. Screening efficiency directly affects production efficiency. Lzzg’s screening screen has the advantages of large processing capacity, high screening efficiency, long life, and other advantages, for customers’ reference.

Washing and Scrubbing

After crushing and screening, the frac sand needs to be processed by a sand washing machine and a scrubbing machine. The sand washing machine can remove the impurities covering the surface of the sand and at the same time destroy the water vapor layer covering the sand grains to facilitate dehydration and play a role in efficient sand washing and cleaning. The scrubbing machine can scrub the dirt and oxidized impurities on the surface of the silica sand to improve the purity of the silica sand material, and the scrubbing efficiency can reach more than 90%.

Dewatering

LZZG dewatering screen equipment can remove the moisture in the frac sand material so that it can be stacked in the drying treatment stage for further processing. It can also remove excess mud and other impurities in the material. Efficient dehydration can reduce fuel consumption in the dry processing stage, reduce water transportation, reduce residual slag, and increase the turbidity of the final sand.

Fines Recovery

The main function of the fine sand recovery machine is to clean, dehydrate, and classify the frac sand. It can well recover a large amount of frac sand lost by the sand washing machine in the traditional sand making industry, which improves economic efficiency and reduces the disposal of tailings. The cost and loss of fine sand will cause pollution and damage to the environment.

Sludge Treatment

If the wastewater generated during the production process of frac sand is directly discharged, it will cause serious pollution to the natural environment. The sewage treatment plant designed and developed by LZZG is a closed automatic sewage treatment system. Under the principle of recycling, the wastewater is separated from mud and sand, separated from mud and water, and discharged dry. Through screening, cleaning, dewatering, recycling, solid-liquid separation, sludge dewatering, and other links. The sludge and clean water in the entire system are separated, the recovery rate of sand and gravel screening is high, and the sewage is purified and recycled, to save resources, reduce water consumption, and meet environmental protection requirements. The sewage treatment plan mainly includes sewage treatment pipelines, sewage tanks, clean water tanks, sediment separation equipment, screening equipment, fine sand recovery equipment, dryers, thickening tanks, filter presses, and other parts.

Why LZZG Frac Sand Plant

Our Advantages：

1. Equipment is specifically designed for silica sand applications.
2. Drier products reduce storage space and costs.
3. This system recycles more of the water.
4. Final product comes in various sizes that meet different demands.