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High purity silica sand screening and cleaning production line
Release time:
Nov 14,2023
With the increasing depletion of natural crystal resources, extracting high-purity silica from ordinary silica sand has become an inevitable trend. Therefore, it is necessary to carry out impurity removal, cleaning, and purification processes on the finished silica sand to obtain refined or high-purity silica sand.
Silica sand treatment process flow:
In production, the commonly used silica sand processes mainly include preliminary screening and impurity removal, cleaning, iron removal, dehydration, drying, fine screening, and tail water recycling and reuse. Through joint operations, the mineral impurities in silica sand are cleaned to obtain high-purity silica sand with particle size and impurity content that meet the requirements.
Step 1. silica sand screening (impurity removal)
The raw materials are transported by a belt conveyor to a drum screen or a circular vibrating screen for impurity removal, with a spraying device added to screen out impurities such as branches, leaves, shells, stones, etc., and initially remove mud;
Step 2. silica sand cleaning (recycling)
The material enters the sand washing machine for cleaning. There are multiple options for silica sand of different regions and grades, and it is recommended to use a wheeled or spiral sand washing machine for this step to prevent the loss of the majority of fine sand.
Step 3. silica sand iron removal (magnetic separation)
After washing the silica sand, a magnetic separator can be configured to remove iron, meeting the required iron content standard for the finished sand. The iron containing concentrate after magnetic separation is transported to the designated location by a chute or belt conveyor.
Step 4. silica sand drying+fine screening process
By using an equipment dryer, high-purity silica sand after impurity removal can be dried and then packaged into finished products.
The dried material can be directly packaged or subjected to the next step of fine screening to achieve multiple particle sizes of finished sand.
Step 5. Tailwater zero discharge system process
In response to the discharge of mud and tail water in the cleaning process and environmental requirements, our company has launched a complete tail water recovery system. The discharged tail water is pumped to the transfer tank by a vertical pump, and then to the thickening tank. Flocculants are added to accelerate the concentration and sedimentation of the mud. Clear water is discharged from the upper drainage outlet to the clean water tank for recycling and reuse. The mud sinks to the cone under gravity, and then is pumped to the filter press by the slurry pump to achieve the separation of mud cake and water.
Through this process, the reuse of clean water and the dry discharge of solid waste are achieved, achieving the goal of green environmental protection.
The above mainly introduces the silica sand treatment process and equipment. In practical applications, it is necessary to design and customize a suitable process plan and a suitable high-purity silica sand production line flow according to the customer's finished product needs.
With the increasing depletion of natural crystal resources, extracting high-purity silica from ordinary silica sand has become an inevitable trend. Therefore, it is necessary to carry out impurity removal, cleaning, and purification processes on the finished silica sand to obtain refined or high-purity silica sand.
Silica sand treatment process flow:
In production, the commonly used silica sand processes mainly include preliminary screening and impurity removal, cleaning, iron removal, dehydration, drying, fine screening, and tail water recycling and reuse. Through joint operations, the mineral impurities in silica sand are cleaned to obtain high-purity silica sand with particle size and impurity content that meet the requirements.
Step 1. silica sand screening (impurity removal)
The raw materials are transported by a belt conveyor to a drum screen or a circular vibrating screen for impurity removal, with a spraying device added to screen out impurities such as branches, leaves, shells, stones, etc., and initially remove mud;
Step 2. silica sand cleaning (recycling)
The material enters the sand washing machine for cleaning. There are multiple options for silica sand of different regions and grades, and it is recommended to use a wheeled or spiral sand washing machine for this step to prevent the loss of the majority of fine sand.
Step 3. silica sand iron removal (magnetic separation)
After washing the silica sand, a magnetic separator can be configured to remove iron, meeting the required iron content standard for the finished sand. The iron containing concentrate after magnetic separation is transported to the designated location by a chute or belt conveyor.
Step 4. silica sand drying+fine screening process
By using an equipment dryer, high-purity silica sand after impurity removal can be dried and then packaged into finished products.
The dried material can be directly packaged or subjected to the next step of fine screening to achieve multiple particle sizes of finished sand.
Step 5. Tailwater zero discharge system process
In response to the discharge of mud and tail water in the cleaning process and environmental requirements, our company has launched a complete tail water recovery system. The discharged tail water is pumped to the transfer tank by a vertical pump, and then to the thickening tank. Flocculants are added to accelerate the concentration and sedimentation of the mud. Clear water is discharged from the upper drainage outlet to the clean water tank for recycling and reuse. The mud sinks to the cone under gravity, and then is pumped to the filter press by the slurry pump to achieve the separation of mud cake and water.
Through this process, the reuse of clean water and the dry discharge of solid waste are achieved, achieving the goal of green environmental protection.
The above mainly introduces the silica sand treatment process and equipment. In practical applications, it is necessary to design and customize a suitable process plan and a suitable high-purity silica sand production line flow according to the customer's finished product needs.
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Luoyang Nairy Machinery Equipment Co., Ltd. (hereinafter referred to as Nairy) was founded in Luoyang, the Holy City of China. After years of innovation and development, Nairy products have made historic breakthroughs in the supply of sand and gravel system equipment and spare parts, the supply of belt conveyors, the research and development and supply of solid waste recycling equipment...
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Guohong Advanced Manufacturing Industrial Park, No. 18 Xiaowen Avenue, Yibin District, Luoyang City, Henan Province
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