CN2061934U

CN2061934U - Extrusion forming equipment for cement raw material

Info

Publication number: CN2061934U
Application number: CN 89217921
Authority: CN
Inventors: 汪宜光; 崔长利
Original assignee: China Building Materials Academy CBMA
Current assignee: China Building Materials Academy CBMA
Priority date: 1989-10-17
Filing date: 1989-10-17
Publication date: 1990-09-12

Abstract

The utility model discloses extrusion forming equipment for cement raw meal. The raw meal can be calcined after entering a kiln under the condition that the raw meal is processed into balls during the process of the production in cement plants with vertical kilns and Lepol kilns. Most of the existing cement plants adopt balling disks to form balls, and in this way, the balling quality is bad, the sizes of the real balls are difficult control, and the requirements of the raw material of clay are high. The extrusion forming equipment for cement raw real is designed by aiming for the defects of the prior art. The raw meal enters a screw extrusion press after stirred by the equipment with water, and then the raw meal is extruded into mud bars which are cut into raw meal segments by a cutting machine; the raw meal segments can be calcined directly in a kiln and can also be calcined in the kiln after rolled into meal balls by a rotating cylinder.

Description

Extrusion forming equipment for cement raw material

The utility model belongs to the equipment of cement production process process.

In shaft kiln and lepol kiln cement mill production process, require that cement slurry is carried out balling-up and can go into the kiln calcining, the pan-pelletizer balling-up is adopted in the above-mentioned type cement mill more at present, and balling-up is of poor quality, and size is uneven neat.The pre-watering granulation technology has been adopted in some cement mill in recent years, but the pellet quality is still undesirable, and raw material medium clay soil plasticity can't be eliminated the influence of Forming Quality, thereby ventilation resistance and homogeneity in the kiln have been had a strong impact on, directly have influence on the output of kiln and the quality of cement clinker, also increased the consumption of the firing system energy.

China the fifties once the someone utilize existing fine coal ball press to make the cement slurry ball test, this machine is to produce pressure in tangential direction when relatively rotating with two garden rollers that have 1/2 a ball mould moisture raw material are pressed into sphere, because of raw material bondings mould, cause demoulding difficulty and cause test failure.

Task of the present utility model is the problem that exists at present prior art, design a kind of cement slurry extrusion formation equipment that is suitable for shaft kiln and the use of lepol kiln cement mill raw material granulating technology, make the material grain size of moulding even, intensity is moderate, unlikely breaking in calcination process, kiln ventilation is good, thereby can improve the yield and quality of cement, cuts down the consumption of energy.

The utility model mainly is made up of material feeder, stirrer, screw extrusion press, porous plate, cutting machine; One of material feeder termination feed bin, another termination stirrer opening for feed, the discharge port of stirrer connects the import of screw extrusion press, and porous plate is equipped with in the other end of screw extrusion press, and side is equipped with cutting machine outside the porous plate.

The another kind of configuration of the utility model is on the basis of basic configuration in the above, and a rotating cylinder that is constant slope is housed below cutting machine.

Be listed as for two example two below, and in conjunction with the accompanying drawings the utility model be described in detail;

Fig. 1 cement slurry extrusion formation equipment basic block diagram

The another kind of configuration of Fig. 2 cement slurry extrusion formation equipment

Embodiment 1, makes the bulk goods grain

Referring to accompanying drawing 1, go into the kiln raw material and enter stirrer 2 through feed bin material feeder 1, add and send into screw extrusion press 3 after water stirs, pug is pushed pug to porous plate 5 by extrusion machine blade 4, under the effect of squeeze, pug is squeezed into the mud bar, and be cut 6 and cut into material grain, porous plate 5 can be changed and be different apertures, to make the material section of φ 3～φ 50m/m; Material feeder 1, stirrer 2 and screw extrusion press 3 can be used the synchronous variable-speed driven by motor, and cutting machine 6 can be installed buncher separately, regulates the rotating speed of these two groups of bunchers, can be made into the material section of different lengths, go into the kiln calcining.

Embodiment 2 makes spherical material grain

Referring to accompanying drawing 2, on the basis of embodiment 1, a rotating cylinder 7 that is constant slope is installed below cutting machine, the material section after cutting is rolled into spherical in blanking groove is fallen rotating cylinder, goes into the kiln calcining.

Advantage of the present utility model and effect have following some:

1. can make size evenly according to the requirement of firing process, the material grain of moderate strength, its magnitude range is φ 3～φ 50m/m.

2. according to product requirement, the rotary speed of its extruding rotating vane can be 1～60 rev/min of adjustment, and mud bar extruded velocity can divide at 0.2～10m/ to be adjusted, and cutting speed can be adjusted at 10～1200 times/minute.

3. use this equipment, can make all material of neat, good permeability of particle, voidage is more than 40% between ball, can greatly improve the calcination operation condition of kiln, in the constant situation of other conditions, compare with the pan-pelletizer production technology, can improve the output 10～20% of kiln, cement clinker quality improves a label, and the 5～20%(that cuts down the consumption of energy comprises power consumption and coal consumption).

4. this equipment is regulated flexibly, and is simple to operate, easy to maintenance, can replace at present all shaft kilns, the pan-pelletizer in lepol kiln cement mill fully.

Claims

1, a kind of cement slurry extrusion formation equipment, it is characterized in that: this equipment is made up of material feeder, stirrer, screw extrusion press, porous plate and cutting machine; One of material feeder termination feed bin, another termination stirrer opening for feed, the discharge port of stirrer connects the import of screw extrusion press, and porous plate is equipped with in the other end of screw extrusion press, and side is equipped with cutting machine outside the porous plate.

2, a kind of cement slurry extrusion formation equipment according to claim 1 is characterized in that the rotating cylinder that is constant slope is equipped with in the side under cutting machine.