Production process of Glass grade silica sand processing line (Take
the finished product 20-140 mesh as an example)
Preliminary consideration of the beneficiation process of this
beneficiation production line is:
"raw ore - belt conveyor (material conveying) --pre-screen (screening, impurity removal) - —scrubbing machine (mineral surface impurities Removal and
scrubbing) - desliming bucket (separation of mud and sand) - hindered settling machine (±20 mesh classification)— -20 mesh sand enters trommel ( Coarse particle safety inspection
sieve)—concentrating bucket (adjusting pulp
concentration)—hydraulic classifier (±140 mesh classification, 20-120 mesh material enters magnetic separator)—magnetic separator
(reducing iron content) --dewatering screen - finished sand pile"
Equipment Introduction
1.pre-screen (screening, impurity removal)
1. vibrating screen: the excitation force can be adjusted at any
time, which is convenient for modular design and use
2. The sieving machine structure trend is simplified, and it is
reasonable to improve the equipment manufacturing technology level
and equipment accuracy.
3. Screening machine has high screening efficiency, large
processing capacity and long service life.
4. Pre-selected particles, turf, tree roots and other impurities
larger than 4 mesh to improve production efficiency and quality.
2.sand scruber (mineral surface impurities Removal and scrubbing)
1. It is mainly used for the separation of slime and the removal of
surface impurities. Pressurized scrubbing will purify the crushing
rate, impurities, and non-rounded materials in advance, so as to
reduce the crushing rate and purification.
2. Mild scrubbing, unique trough structure and impeller
configuration, the scrubbing strength is improved by about 30%
compared with the traditional scrubber with the same
specifications.
3. Wear-resistant and corrosion-resistant, the tank is lined, and
the impeller is made of wear-resistant materials, which has high
corrosion resistance and wear resistance.
3.GTN Desliming bucket (separation of mud and sand)
Desilting Machine is a professional equipment for classification,
desliming and concentration of quartz sand. Its shape is an
upside-down cone. The ore feeding cylinder is set at the center of
the liquid surface, and the bottom edge of the cylinder is
submerged to a certain depth below the liquid surface. The pulp is
fed into the central cylinder along the tangential direction, and
flows out from the bottom edge after buffering. The outflowing pulp
flows radially to the surrounding overflow weir. During this
process, the coarse particles whose settling velocity is greater
than the rising velocity of the liquid flow will settle in the tank
and be discharged through the bottom grit. The fine particles enter
the overflow tank with the surface slurry.
4.GSS hindered settling machine (±20 mesh classification)
Product introduction: The main function is to separate the + 20 mesh sand. The mixture of
sand and water is fed from the upper part through a feeding trough,
and moves downward in the cylinder under the action of gravity.
There is a porous water spray plate at the lower part of the
cylinder, and the rising water flow interacts with the falling
solid particles to form gradually. In a fluidized bed, the
particles of different particle sizes will fall down or move up at
the hindered rate of the volume concentration. With the help of the
electronic pressure sensor, the pressure of the fluidized bed can
be measured and the opening of the discharge valve can be adjusted
automatically. degree to ensure accurate grading for the required
separation.
5. GSF hydraulic classifier(±140 mesh classification)
1. The material is subjected to the rising water flow in the
cylinder, and the particle size is classified according to the
specific gravity classification, which has high production
efficiency and low energy consumption.
2. Equipped with an automatic control system, the adjustment of the
operating parameters is simple, convenient and easy to control
3. The water tank below the cylinder is equipped with special
devices. When the water is stopped, the ascending water hole is
automatically closed, and the material in the cylinder will not
block the water hole and enter the water tank.
5.GTGB high gradient magnetic separator
It uses 4500GS-15000GS permanent magnet magnetic block. The
material passes through the belt and the magnetic material is
adsorbed. Then the belt rotates to separate the raw material from
the magnetic material. It mainly reduces the crushing rate and acid
solubility.
6. GTLH high grandient vertical ring magnetic separator
1.4T magnetic field strength, to further removes iron oxide
7. GTTS dewatering screen
It is used to wash and dehydrate the ore. Because the water content
after the finished product is too high, it needs to be dewatered
through a dewatering screen to reduce the water to a controllable
range. The reduction of the water content can improve the
efficiency of the dryer.
8. Environmental protection circulating water treatment
Flocculation sedimentation method in physical and chemical method:
After the primary sedimentation of the washing wastewater, the
large particulate matter in the wastewater is removed, and the
effluent enters the coagulation reaction tank. The pollutants
dissolved in the water body polymerize to form larger aggregate
flocs (commonly known as "alum flowers"). Because the proportion of
the "alum flowers" is greater than 1, it precipitates at the bottom
of the water body under its own gravity, so Separation of
pollutants from water bodies
