1. the stroke (s) and stroke (n)Stroke,
stroke loose hierarchies can have a big impact on the bed. Chong Cheng Chong
different, would result in different flow characteristics and loose conditions
of time and space. Increases the water flow speed and flow the pushing force
become greater; increasing the water flow acceleration of acceleration
reasoning increases, resulting in different effects on particles. Flow velocity
is too small, beds of loose too small; if the water flow and speed is too
great, even more than the heavy acceleration, the bed will hold up as a whole,
were not very well loose. Large-stroke, high bed riser, and high slack space.
Large stroke, short loose of time making the bed, but speeds up the tiered
rate. Therefore, suitable for layering loose role is appropriate results of the
combined effect of stroke, stroke.Stroke, stroke according to material
properties, separation operation, operating conditions, as well as on product
requirements, determined experimentally. Density, granular bed thickness,
processing thick material, or a large amount of essential minerals large,
required a larger stroke, a smaller stroke. Backwater hours. Large-stroke
should be used. General Cheng Xiaochong or small Cheng Dachong down two tie
system. Separating coarse grained materials should be treated with Chong Cheng
Xiaochong drive small Chong Cheng Dachong sorting fine material to date.
2. sieve under water with water
Under the screen fill water water not only
plays the role of supplementary water consumed by tailings discharge, more
importantly, adjustable beds of loose and weakening downward flow and strong
suction effect, controlled discharges under the screen concentrates of quantity
and quality.Water in the sieve size, based primarily on the bed of loose and
concentrate yield and quality regulation requirements. When the material
density, when dealing with large amount of bed thickness, increasing screening
of additional water will be increased under the bed of loose. For wide level
materials, requires both appropriate for loose and hope on the grounds of
excessive increase in a riser for loss of fine particles in the tail section,
additional water under the small screen can be controlled at this time.
Requirements concentrate high (such as sorting before fine grain Jig), sieve the
water volume can be more if major is to reduce the mineral taste of jobs (such
as Jig before the ratings), water under the sieve should be smaller.Screening
effects of additional water on the properties of different materials under
different, coarse material, attempts to enlarge the screen larger changes under
water with water beds of loose, often futile, colleagues will increase water
consumption, it is not economic. But for medium and fine materials, additional
water adjust screen is very sensitive and effective.When jigging, added under
the screening requirements of water enough to maintain a constant of water.
Metal ores, 5-10 cubic metres of water per ton of ore. Water pressure required
is greater than 2
Pound/cubic centimeters.
3. bed in nature and composition
Bed thickness is mainly affecting the
degree and speed of mineral particle layered loose. Useful mineral ore and
gangue density-difference, in order to speed up the tiered rate, enhancing
productive capacities should be used in thin-bed layers; concentrate when you
require high quality, thick bedding should be used. Tailgate height of bed
thickness by jigging machine control, typically 100-200 mm.When elected not
less than 2 mm fine-grain ore, the use of screening method of discharging. At this
point, the laying of artificial bed must be on the screening Board to regulate
the quantity and quality, control concentrate. Composition of artificial bed
(bed thickness and artificial stone particle size, density) to concentrate
significant impact quantity and quality. Bed rock grain size coarse, low
density, small artificial bed thickness, pore large, fine is easy through the
artificial bed, concentrate a high recovery rate, but low taste, conversely,
the recovery rate is low, high concentrate tastes. Artificial bed density
should be equal to or slightly less than the density of mineral density.
Constructed under the bed the size of screen concentrates the maximum particle
size of more than three times. Artificial bed thickness of not less than half the
jig room height, General 10-70 mm. Bed size ratio should be as appropriate as
possible, shape should be as even and smooth as possible.It should be noted
that factors affecting the jigging washing process is not mutual isolation,
must be specifically analyzed. Appropriate operating system, best determined by
the test.
