Dry Sand Production And Processing Technology

Summary

Dry sand production is not restricted by water sources and the environment, and can also be carried out in places where water resources are scarce to reduce water pollution. In addition, the dry process only removes particles smaller than 75um, and the various particles are evenly graded, and the gr

You May Be Interested In

Detailed Introduction

Dry sand production is not restricted by water sources and the environment, and can also be carried out in places where water resources are scarce to reduce water pollution. In addition, the dry process only removes particles smaller than 75um, and the various particles are evenly graded, and the gradation zone line is good. With the application of tower-type sand-making systems, dry production has gradually become a more popular sand-making process in the current market.

In engineering applications, the amount of crushed stone accounts for more than twice the amount of sand. The establishment of a separate sand factory with a large investment and limited supply is not economically economical. On the basis of the crushed stone production and processing system, an increase of one A set of vertical shaft impact crusher (sand making machine) and a set of dust removing device, the returned material crushed by the jaw crusher and some stones with different particle diameters enter the sand making machine to separate the stone powder that does not meet the grading requirements. Formation of mechanism sand.

Mine selection pays attention to wind direction

For mines with thicker soil layers, more mud in the interlayer, lower parent rock strength, lower dolomite content, and layered rocks into flakes, avoid in-situ plant construction. When choosing a mine, the wind direction and the influence of wind speed should be considered, and it should be selected near the mountainous wasteland. The wind speed is small, and the dust should not fly to the village or farmland. The reserves of Shishan meet the requirements. The higher the strength, the better. The strength of the wool base material must not be lower than 80MPa. To this end, reserves, strengths, and mining ranges are analyzed through geological drilling.

Reasonably designed machinery and equipment installation and stone storage site are extremely important. According to the terrain conditions and wind direction, the equipment is arranged in steps along the mountain. The initial crushing should be arranged on the uppermost step in the mining direction, the second crushing and screening equipment should be arranged on the next step, and the finished product discharge should be arranged on the lowest step, so that production and discharge do not interfere with each other, which is environmentally friendly and economical.

The power line design fully considers the power load

The power consumption of the stone yard production is large, usually a sand-stone co-production unit with a production capacity of 180 ~ 200t/h has more than 1000kV.A. When designing the transformer capacity, we must consider the affluence of all equipment when they are enabled at the same time. The line design is preferably not less than 50mm².

The soil removal device is indispensable

The ore wool is loaded into the silo by the loader, and enters the jaw crusher through the vibrating feeder. Crushed stones and soil blocks below 100mm are roughly selected by the feeder and do not enter the jaw crusher, and are sorted to the feeder In the lower silo, the belt conveyor conveys it to the vibrating screen installed on the chute for screening. The stone below 20mm is basically soil. It is classified as discarded. Crushed stone above 20mm and the stone after the initial break directly enter the transition bin , Effectively prevent the mixing of soil and impurities. In this way, the mud and soil in the wool can be removed, and the mud content of crushed stone and machined sand is basically well controlled.

Selection of sand and stone materials

After processing several kinds of stone from crushed stone, choosing which grade of stone to enter into the sand making machine is a crucial step for whether it can produce qualified machine sand and increase the output. After the stone is crushed, the secondary crushed stone debris accounts for about 30% of the total production, and the stone below 0.075mm accounts for about 25% of the stone debris. If the stone chips enter the sand making machine again, there will be more stone powder below 0.075mm and more waste will be generated. It is not cost-effective to produce sand. Mechanism sand.

Quality assurance measures

The production and processing technology of dry sand making with machined sand is simple and practical, which can reduce the pollution of water resources, help protect the environment, easily control the grading of machined sand, and reduce production costs.

Hot Products