1. Brief introduction of spiral classifier

The spiral classifier is based on the principle that the solid particles have different sizes and specific gravity, so the sedimentation speed in the liquid is different. The fine ore particles float in the water and overflow, and the coarse ore particles sink to the bottom of the tank. It is a kind of grading equipment that is pushed to the upper part by the screw to carry out mechanical grading. It can classify the powder ground in the mill to filter, and then use the spiral blade to screw the coarse material into the feed port of the mill, and filter it. The fine material discharged from the overflow pipe. The base of the machine is made of channel steel, and the body is welded with steel plates. The water inlet head and shaft head of the screw shaft are made of pig iron sleeves, which are wear-resistant and durable. The lifting device is divided into two types: electric and manual.

2. Brief introduction of ball mill

The ball mill is a horizontal cylindrical rotating device, driven by outer gears, two warehouses, and a lattice type ball mill. The material is spirally and evenly entered into the first chamber of the mill through the feeding hollow shaft by the feeding device. There are stepped lining boards or corrugated lining boards in the chamber, and steel balls of different specifications are installed inside. The rotation of the cylinder produces centrifugal force to bring the steel balls to a certain height. After falling down, it will hit and grind the material. Materials get coarse grind in the first warehouse, then into the second warehouse through the single-compartment. The second warehouse has flat liner and also filled with balls , then grind the material again. The powder is discharged through the unloading grate plate to complete the grinding operation.

This machine is composed of feeding part, discharging part, rotary part, transmission part (reducer, small transmission gear, motor, electric control) and other main parts. The hollow shaft is made of cast steel, and the lining can be replaced. The rotary gear is processed by casting hobbing. The cylinder is inlaid with a wear-resistant liner, which has good wear resistance. The machine runs smoothly and works reliably.

3. Brief introduction of wet magnetic separator

Wet permanent magnetic drum magnetic separator is a kind of magnetic separator commonly used in iron ore beneficiation plants. It is suitable for separating strong magnetic minerals. According to the structure of the tank, the magnetic separator is divided into three types: downstream type, countercurrent type and semi-countercurrent type. The particle size of magnetic separators with three different tank types is as follows: downstream tank ≤ 6mm, countercurrent tank ≤ 1.5mm, semi-countercurrent tank ≤ 0.5mm.

The downstream magnetic separator has a large processing capacity, which is suitable for roughing and selecting coarse-grained and strong magnetic materials, and it can also work in series with multiple sets. When the downstream magnetic separator feeds a large amount of ore, the magnetic ore particles are easily lost in the tailings, so the operation and management must be strengthened to control the lower pulp level.

Countercurrent magnetic separator is suitable for roughing and sweeping of fine-grained strong magnetic minerals, with high recovery rate but low concentrate grade. Because coarse-grained materials are easy to deposit and block the sorting space, countercurrent magnetic separators are not suitable for processing coarse-grained materials.

Semi-countercurrent magnetic separator can obtain high-quality iron ore concentrate, and can also get better recovery rate, so semi-countercurrent magnetic separator is widely used in production practice. It is suitable for roughing and beneficiation of ore particles below 0.5mm, and multiple sets can be connected in series and parallel to realize multiple sweeping and beneficiation.

4. Brief Introduction of Jaw Crusher

The working part of the jaw crusher is two jaw plates, one is the fixed jaw plate (fixed jaw), which is fixed vertically (or the upper end is slightly outward) on the front wall of the body, and the other is the movable jaw plate (moving jaw). Inclined, forming a crushing cavity (working cavity) with a large top and a small bottom with the fixed jaw plate. The movable jaw plate makes periodic reciprocating motions against the fixed jaw plate, sometimes separating and sometimes approaching. When separated, the material enters the crushing cavity, and the finished product is discharged from the lower part; when approached, the material installed between the two jaw plates is squeezed, bent and split to be broken. It has the following characteristics: 1. Simple structure, convenient maintenance and use; stable performance, low operating cost; large crushing ratio, uniform product particle size; 2. Deep crushing cavity and no dead zone, which improves the feeding capacity and output; discharge port The adjustment range is large, which can meet the requirements of different users; 3. The gasket type discharge port adjustment device is reliable and convenient, and the adjustment range is large, which increases the flexibility of the equipment; 4. The lubrication system is safe and reliable, the parts are easy to replace, and the maintenance workload is small ;;5. Equipment energy saving: 15% to 30% energy saving for a single machine, and more than double the energy saving for the system; through the continuous efforts of many mineral processing workers, the technological content of domestic mineral processing equipment and mineral processing technology have been greatly improved, which is a great contribution to industrial production. Provide good ingredients.