In the crushing workshop, the operation of separating the ore from the waste rock by manual means is called a hand selection. There are hand-selected two meanings: First, from the waste rock containing small amounts of gold in the ore sorting out; the second is excised from hand-selected ore waste rock. The latter is widely used in gold mines. In most cases, mining causes waste rock mixing and ore depletion. Before grinding, try to use the hand to remove the waste rock in the ore to improve the ore grade. Meanwhile, when the ore contains clay in difficult shattering, clay in hand-selected may be discarded; hand-selected from ore without removing debris mixed waste, such as wood, iron wire, scrap metal, broken drill pipe, in order to avoid these heteroatoms Damage and accidents are caused by crushing, sieving and grading operations. The hand selection process is simple, no special equipment is required, and it is only required on a simple hand-selected belt and a hand-selected table. Hand-selected belts must use flat belt conveyors, belt speed should not be too fast, generally For most types of ore, gold-bearing ores and gangues are easily identifiable. Mainly white quartz waste rock, schist gray quartz, hornblende schist shale and black, but there are certain types of ore, gold ore which is indistinguishable from the waste rock. In this case, the hand selection must be very careful and carefully identified. Adequate lighting is important for effective hand selection. After testing, the most satisfactory is to use a cold cathode fluorescent lamp. Fluorescent lights should be properly covered and hung below the line of sight to eliminate glare and shadows. In individual cases, the rubber belt of the conveyor is also coated with water red, yellow or green to distinguish the waste rock from the ore. The hand selection of mud ore requires pre-selection washing and rinsing the slime adhered to the surface of the ore to expose the cleaned ore surface for easy visual identification. Hand-selected suitable particle size range is 75 ~
Air Suction type Destoner
We have two types of Destoner. The Air
Suction type Destoner is traditional and most popular Destoner in the world. It widely
used on grain cleaning process or flour processing process, to remove stones or
sand from good grain or maize wheat that going to flour mill process. We have
two models : TQSF Destoner and QSX Destoner. The TQSF Destoner has two sieve
layers, which can remove large impurities and remove stones from good seed. The
QSX Destoner is using fish-scale stone removing table to remove stones, which
is similar with European design.
Function of Destoner:
Destoner Machine is used to remove sand,
stones, metals from good grain , seed, beans. It is also called Dry Stoner,
Stone Removing Machine.
Its working principle is based on gravity
weight, to remove heavier impurities from good materials.
Working Process of Destoner:
The working process is : when seed flow
into vibration deck/sieve, with the combined work of vibration and air blowing,
the heavier materials and lighter materials will separate in different layers
and discharge from different outlet.
Application of Destoner:
Our Destoner Machine can be used for all
kinds of seed, grain, beans, such as wheat, maize, rice, paddy, sesame, red
beans, chickpea beans, soybeans, sunflower seed etc.
We also provide extra table or different
sieves to process different materials.
Specification of Air Suction Destoner:
Model
Capacity(t/h)
Power(kw)
Weight(kg)
Dimension(mm)
TQSF-60
5
3.5
320
1350X860X1800
TQSF-80
7.5
4.5
430
1350X1050X1800
TQSF-100
10
6.24
480
1400X1250X1920
TQSF-125
12.5
6.24
580
1460X1500X1940
QSX-85
5
3.55
400
1300X1500X3200
Air Suction Type Destoner,Rice Destoner,Grain Destoner,Air Suction Rice Destoner SHIJIAZHUANG SYNMEC INTERNATIONAL TRADING LIMITED , https://www.seedgraincleaner.com