The artificial quartz stone board has high requirements for the whiteness,
particle shape, and gradation stability of quartz sand. Shanlu Heavy Industry
provides specialized production line equipment for sheet sand, including
crushing and shaping, grading and screening, scrubbing, magnetic separation, and
dehydration. It is suitable for the production of sheet sand with specifications
such as 40-70 mesh and 70-140 mesh, meeting the requirements of the sheet
industry for sand whiteness ≥ 85 degrees and Fe ₂ O3 content ≤ 150ppm.
Taking the typical wet processing process route of board sand as an example:
the raw ore is roughly crushed and sent to the ZSW high-purity horizontal sand
making machine for medium and fine crushing shaping. The equipment adopts a
horizontal hammer breaking structure, with the discharge particle size
controlled within the range of 0.5-3mm, and the proportion of finished sand
needle shaped particles is low. The crushed material is transported by a belt
conveyor to the YBF square swing screen for precise grading. The screening
machine designed by Shanlu Heavy Industry adopts flat rotary motion, with a
screening efficiency of over 95%, and can separate multiple specifications of
products such as 40-70 mesh and 70-140 mesh at once. The coarse particles on the
sieve are returned to the sand making machine for further crushing, while the
fine powder on the sieve is collected separately.
The surface of graded sand often adheres to iron films and mud pollutants,
directly affecting the whiteness of the board. Shanlu Heavy Industry is equipped
with CX scrubbing machines in the production line for strong scrubbing. The
device consists of a scrubbing tank and a high-speed impeller group, which uses
high-intensity stirring to make the sand particles rub against each other and
remove surface attachments. The scrubbing concentration is controlled at 65%
-70%, and the scrubbing time can be adjusted from 8-15 minutes. After scrubbing,
the surface cleanliness of the sand particles is significantly improved,
creating favorable conditions for subsequent magnetic separation of iron.
The cleaned slurry enters the PBC permanent magnet wet plate magnetic
separator for iron removal. The device adopts a flat magnetic separation
structure with a magnetic field strength of 6000Gs. When the slurry flows
through the surface of the flat plate, magnetic particles are adsorbed to the
magnetic field zone, and non-magnetic sand is discharged with the water flow.
After flat plate magnetic separation, the content of Fe ₂ O Ⅲ in the sand
material can be controlled below 150ppm, meeting the requirements of first-class
board sand. For ore sources with high iron content, Shanlu Heavy Industry can
add an LHC vertical ring high gradient magnetic separator for secondary scanning
after flat plate magnetic separation, further reducing the Fe ₂ O3 content to
below 80ppm.
The refined sand after magnetic separation needs to be dehydrated to a
moisture content of less than 12% before it can be dried or directly packaged.
Shanlu Heavy Industry uses DTS vibrating dewatering screen for pre dewatering,
with a double-layer polyurethane screen surface and a vibration frequency of
24Hz. After dewatering, the moisture content of the sand material can be reduced
to below 18%. The screened slurry enters the BTC ceramic filter for final
dehydration. After filtration, the moisture content of the filter cake can be
controlled within 10%, and the clear filtrate can be directly reused for
front-end scrubbing or magnetic separation processes.
In terms of tailings treatment on the production line, Shanlu Heavy Industry
is equipped with a dry discharge system consisting of NM thickener and BK
high-pressure diaphragm plate frame filter press. The thickener increases the
concentration of the tailings slurry from 5% -8% to 45% -50%, and the bottom
flow is sent to the filter press for pressing until the moisture content is
below 12% to form a dry cake, which is convenient for storage or external
transportation. The combined reuse of overflow water and filter filtrate can
achieve a water recycling rate of over 90% in the production line.
Shanlu Heavy Industry is located in Shandong and has over 20 years of
experience in designing and manufacturing mining machinery. Its products cover a
full range of categories including crushing, screening, scrubbing, magnetic
separation, dehydration, and pressure filtration. Shanlu Heavy Industry can
provide customized services from single machine selection to whole line
integration based on the customer's original sand whiteness and iron
content.
In terms of equipment details, the ZSW sand making machine uses high chromium
wear-resistant alloy for the hammer head, which has a long service life; YBF
swing screen mesh tensioning device achieves rapid screen replacement; The
surface of the CX scrubbing machine impeller is covered with a polyurethane
wear-resistant layer; PBC flat magnetic separator with fully sealed and
corrosion-resistant magnetic system; BTC ceramic filter is equipped with an
automatic backwash system. These designs reduce the daily maintenance costs for
customers.
If you need equipment parameters or incoming material test data for the board
sand production line, please call Manager Zhang at 13583776655 (same as
WeChat).