Concentration ratio and concentration efficiency of the thickener

After the slurry is concentrated, the ratio of the concentration of the concentrated product to the concentration of the ore before concentration is called the concentration ratio. The concentration ratio is an efficiency index for checking the ease of precipitation of the concentrate slurry in a certain period of time. Concentration is calculated as follows:

Where ik is the concentration ratio of the concentrator, times;
R O - the concentration of the concentrate of the concentrator, %;
R K - the concentration of the concentrate in the concentrator, %;
R P - the liquid to solid ratio of the product before concentration;
R A - the liquid to solid ratio of the product after concentration.
After the slurry is concentrated, the ratio of the effective amount of water in the thick product to the amount of effective water in the slurry before concentration is referred to as concentration efficiency or dehydration efficiency. It is one of the indicators for evaluating the efficiency of concentrating equipment . The so-called effective water quantity refers to the amount of water that is actually involved. It is necessary to take into account the amount of water that must be carried out by the solids in the dilute product, taking into account the amount of water that must be retained in the concentrated product. The expression for concentration efficiency is:

Where E W - concentration efficiency, %;
W T - the amount of water in the dilute product, tons;
Q - the amount of solids in the dilute product, tons;
R P - the liquid to solid ratio of the ore;
W O - the amount of water in the mine, ton;
W K - the amount of water in the concentrated product, tons;
η W - return water rate, %.

 Punching Machine

Punching production is mainly used for metal sheet . Through the mold, can be blanking, punching, forming, drawing, dressing, fine punching, shaping, riveting and extrusion parts, and so on, widely used in various fields.


Product Description
1.Steel welded body, tempering treatment, high rigidity, accuracy and stability;
2.The crankshaft undergoes grinding treatment after high frequency quenching;
3.Pneumatic dual balance cylinder, which balances the slide block and punch weight to reduce noise and impact;
4. Combined pneumatic clutch and brake are made of friction material, which means long service life;
5. PLC electric control system is safe and reliable;
6. Machine is with both hands button and foot switch to achieve continuous, single and inching practices.



Main Features: 
1.  The punching machine is suitable for forming, blanking, punching, bending and other cold stamping process.
2.  The Casting fuselage,maximum rigidity and minimum deflection for accurate parts and long tool life. body can be tilted, high rigidity and less deformation Compact. Thick plates and large columns provide you with the stable platform .
3.  The Machine use Rigid rotated bond clutch rigid and well supported. The clutch gives continuous strokes for mass production.
4.  Crank shaft is made of special alloy steel machined to close accuracy and fitted in bronze bushes for smooth working, longer life & accuracy.
5.  Properly sized flywheel, is made of high grade cast iron, for storing and releasing adequate energy for the pressing operations, and properly balanced for smooth running.
6.  Gear are of steel cast or fabricated. Gear teeth are generated by precision hobbing machine.
7.  Machine is with both hands button and foot switch control: anti-tie down, non-repeat controls with ring guards.

8.  Protective fence and the safety interlock to ensure the operation safety. Have a movable single-hand pedal switch,easy to operate.


Our factory is the professional and leading manufacturer.

we can produce, design, installation and debug various roll forming machines and metal cold processing equipments.

Main products include metal roof  panel, glazed roof tile, CZ steel  purlin, floor decking, roof ridge cap, sandwich panel, metal keel, roller shutter panel, door frame, metal fence, and  sheet uncoiler, bending, slitting, cutting, flattening, punching, crimping.

Backed by reasonable design, precision machining and selected material, both our standard and customized machines are characterized by long life span, precise forming and easy operation. With our customers` trust, our machines have been sent to America, Australia, Russia, India, Sri Lanka, Nigeria, Pakistan, Uzbekistan, Mozambique, Angola, Turkey, Brazil, etc.

Warmly welcome to visit our factory.

Punching Machine

Punching Machine,Punching Press Machine,Automatic Punching Machine,High Performance Punching Machine

CANGZHOU DIXIN ROLL FORMING MACHINE CO., LTD , https://www.hebeimachine.com