Ceramic sand production processes

Ceramic sand production processes
Simply put, oil sands production of ceramic proppant can be summarized as broken, ingredients, grinding, Ball, calcined, coal preparation, finished cooling, screening, packaging and other processes. The main raw material for high-grade bauxite.
1, broken:
Mining of bauxite, fragmentation is generally about 300 ~ 500mm, containing a small amount of water. Generally use the secondary crushing system jaw crusher and hammer crusher composition, the particle size control in ≤8mm.
Bauxite into the plant after, according to different tastes, separate pile. When used in accordance with the use of indicators.
In the production process of ceramic proppants  is generally added manganese (Mn) elements to reduce the sintering temperature and the product dyed dark. At present, most domestic manufacturers to adopt low-grade (content ~ 50%) of ash as a source of manganese ore or manganese and manganese.
2, ingredients:
Bauxite, manganese powder, recycled materials and other types of materials were transported to the respective material library, set up under the governor belt weigher library materials to achieve automatic dosing.
3, grinding:
Generally use drying and grinding mill, supporting efficient separator, form a closed circuit system. Such high grinding efficiency. Hot air drying of materials from the rotary kiln exhaust gas can, so that waste heat utilization; you can also set up a special stove.
4. Ball:
The raw material powder mill in raw material storage library. General Settings 2 to 3 libraries, the material can be used alone, or more libraries with the material.
Raw material powder is fed into a small hopper, silo screw metering device settings or speed belt scale system, measuring raw quantity. The raw material into the disc-ball machine. At the same time, the use of the meter how much water can be measured by the pipeline pumps the water is injected into the disc-ball machine inside. Ball machine rotation, the particle size of the material can be made into a variety of balls.
Feeding the ball out of late, by the belt into the screening device, qualified into the kiln, excessive flow back to the raw material grinding. According to different kiln production, with a different number of disc-ball machine. The high degree of automation-ball system, continuous process, matching bag filter, you can achieve compliance jobs dust, clean job working environment.
5, calcined:
Feed the ball into the rotary kiln calcination with a certain slope, with the rotation of the rotary kiln, the kiln feed the ball rolling, while pulverized coal is injected into the kiln from the kiln burning, pellet was calcined in a rotary kiln to strength high ceramic sand.
Pulverized coal burner can use a single duct pulverized coal burner, simple and reliable, a high wind; can also be used windy road burners, primary air volume can be reduced to 8% pulverized coal combustion air volume required to improve the secondary into the kiln wind, energy-saving effect is remarkable. Windy road into outer burners Axial wind, coal wind, wind, etc. within the axial flow, flame shape is very easy to adjust.
Measurement of pulverized coal can be used for weighing or rotor Coriolis force scale, precise control of the amount of coal under stable kiln thermal system.
6, coal preparation:
Preparation of coal can be used ball mill or vertical mill, hot air drying pulverized coal can be extracted from the kiln hood. Dynamic separator coal fineness can be adjusted for full combustion of pulverized coal provided the conditions.
7, finished cooling:
ceramic proppant manufacturers  cooling generally use rotary coolers, work is simple and reliable, secondary air cooler completely into the kiln, with the use of multi-channel burner, but you can save a lot of energy. A cooler temperature ceramic sand is very low, you can use the clutch up.
8, the screening:
A cooler ceramic sand, can be transported directly to the multi-level shaker, as required particle size into multiple grades.
Ceramic sand Specifications
Ⅰ type 0.45-0.9mm (20 mesh -40 mesh) high intensity density
Type Ⅱ 0.9-1.25mm (16 mesh -20 mesh) high intensity density
Ⅲ type 1.0-1.70mm (12 mesh -18 mesh) high intensity density
Ⅳ type 0.224-0.65mm (40 mesh -60 mesh) high intensity density
Returns the raw chunks of broken processes.
9. Packing
high density ceramic sand sieved into different silo, warehouse set up electronic measurement scales under the weight of the finished product qualified bagged, sealed after the sewing machine, piling up in the finished product warehouse, to prepare for delivery.
In the process of all the dust points are set bag filter, so clean production.