Views: 5398 Author: Site Editor Publish Time: 2017-01-25 Origin: Site
I. Project overview
Date of signing: 2017-01-25
Processing materials: sludge, river mud, muck, etc
Processing capacity: 100,000 m3/a
Equipment configuration: 1 plug-in rotary kiln (φ2m), 1 cooling machine, 1 roll granulator, 2 double-shaft mixers
Fujian is a professional enterprise engaged in the production of energy-saving building materials, the company has a fully automatic intelligent production line, which can produce sludge ceramics and blocks. In order to expand production, after more than half a year of investigation, Zheng mining machinery with excellent solutions to win the trust of customers, the two sides signed the general contract in January 2017. In the process of determining the plan, the two sides have been to the project site and the case site for many times to communicate and improve the process for many times.
The overall design of this production line meets the requirements of environmental protection, energy-saving improvement equipment is used in many places in the design, and the original plant is used as much as possible in the planning to reduce the project land.
II. Solution
The production process of ceramite in this production line is: raw material drying → raw material batching → aging → raw material loading → raw material stirring → granulation → shaping and screening → calcination → cooling → screening → storage.
1) The sludge and clay are pre-mixed by batching, and then the mixed material goes into the Chenhua Warehouse for aging storage. The aged qualified material is fed by the forklift to the box feeder, which feeds the material to the belt conveyor and then transmits it to the double-shaft mixer for mixing through the belt conveyor. After the two-shaft mixer, the material is transported to the roller granulator for extruding granulation. The finished raw material ball is sifted through the shaping screen, and the unqualified ceramic particles below 5mm are sifted out by the shaping screen. The qualified ceramic particles are sent to the feeding pipe at the top of the kiln tail and enter the rotary kiln. The double gate valve is set at the upper end of the feeding pipe to lock the air, so that there will be no gas overflow when the material enters the kiln tail, and the unqualified material is screened down.
2) Raw material particles in the rotary kiln, with the rotation of the rotary kiln, gradually move to the direction of the kiln head, in the firing zone of 1050℃~1200℃ temperature, calcined into pottery particles. Then it enters the vertical cooling machine for cooling and discharges from the discharge end. The cold air from the outside is forced to blow into the cooling machine through the fan, and the heat exchange is reversed with the hot ceramic particles. After being heated, the cold air enters the kiln as a high temperature secondary hot air, which significantly reduces the heat consumption of the system. Rotary kiln is divided into two sections, drying section and roasting section, the speed of each section can be adjusted, and the plug-in part is made of stainless steel fish scale sealing device.
3) At the end of the kiln of the rotary kiln, the flue gas is involved in the drying kiln, and the material with higher moisture content is dried first, and then the flue gas is discharged into the bag dust collector for dust removal. The emission concentration of the bag dust collector can reach below 30mg/Nm³ to achieve standard emission and clean production. The flue gas after purification is passed into the desulfurization tower for desulfurization treatment, and the flue gas after desulfurization treatment is directly discharged by the fan to the chimney.
4) Rice husks bought from the market are generally crushed and transported to the factory, where they are packed in uniform woven bags. After the husk is poured into the upper hopper, the husk is lifted into the husk bin by a bucket elevator. The rice husk in the rice husk bin is fed to the single channel burner with the help of the speed regulating feed set under the bin. At the same time, the primary fan provides the external air to the single channel burner as the combustion air, and the rice husk is sprayed into the kiln through the single channel burner point. The ceramic particles from the cooling machine are lifted to the storage yard.
III. Project site
