Rotary kiln for calcining minerals
A technology for calcining ore and rotary kiln, used in rotary drum furnaces, furnaces, lighting and heating equipment, etc. It can solve the problems of increasing energy loss, increasing the cost of rotary kilns, and high performance of lifting plates, increasing output and accelerating decomposition. speed, the effect of increasing the calcination speed
Inactive Publication Date: 2012-07-18
唐铁石
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Problems solved by technology
The lifting plate of the invention requires high impact resistance. At a high temperature of 1200°C, the heat-resistant material is required to be wear-resistant and not easily deformed. This requires high performance of the lifting plate, which increases the cost of the rotary kiln. The plate is directly fixed on the cylinder, and the heat energy directly passes through the lifting plate to the cylinder, which also increases the loss of energy
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[0024] Customized high-alumina refractory bricks for the lining of rotary kilns with a diameter of 1.8 meters x 38 meters, one specification is 60mm (length) x 90mm (width) x 150mm (height) and the other is 60mm (length) x 90mm (width) × 220mm (height), half of each. When laying bricks in the kiln, in each circle, 3 bricks are used as a group, and the higher group is built and then the lower group is built. There are about 18 groups in each circle.
[0025] When building the second round after one round, it is still a group of 3 bricks. The difference is that the second round of low bricks is next to the first round of high bricks, and the second round of high bricks just blocks the first round. For the gap of the lower group of bricks, the third circle is built according to the order of the first circle.
[0026] The present invention is not limited to the above embodiments, anyone can obtain its similar products under the inspiration of the present invention, make any chang...
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The invention aims at providing a rotary kiln for calcining minerals, which comprises a kiln tube and is characterized in that an inner kiln wall is composed of a convex area and a concave area which are made of fireproof materials. Height of linear fireproof tiles in the convex area is higher than that of the linear fireproof tiles in the concave area, and the concave area and the convex area are distributed like a Chinese character 'pin'. 1 when the minerals are arranged at the bottom of the kiln, the minerals are fully filled in a concave pit, when the kiln rotates, the minerals in the concave pit are brought to the upper portion from the bottom of a mineral layer along with the rotation of the kiln, the minerals slide out from the pit when rising to a certain angle and fall onto the upper surface of the mineral layer, the minerals on the lower layer are continuously brought to the upper surface, and the minerals in the inner layer can be turned to the surface layer; and accordingly the minerals can be evenly turned over and can be heated evenly. 2 granularity of the kiln minerals calcined in the rotary kiln is small, so that damage is small and service life of the fireproof tiles is long. 3 the granularity of the minerals is small, decomposing is fastened, calcining time is short, calcining speed in improved, yield is improved, and energy consumption is reduced.
Description
technical field [0001] The invention relates to a rotary kiln for calcining ore, in particular to a rotary kiln for producing active lime. Background technique [0002] When calcining ore (such as limestone) with a rotary kiln, the ore enters the kiln from one end of the kiln (kiln tail). As the kiln rotates, the ore continues to roll and move forward. From the preheating zone to the high temperature zone and then to the cooling zone, the ore is heated And a chemical reaction occurs, and the finished product is discharged from the other end of the kiln (kiln head). [0003] The particle size of ore is one of the decisive factors for product yield and quality. If the particle size is too large, it is not easy to burn through, and the ore is not easy to be completely decomposed, and "green core" will often be produced, and the output is low, and the energy consumption is high; , the inner layer of ore has not been decomposed or not completely decomposed; and the inner wall o...
Claims
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IPC IPC(8): F27B7/28F27B7/20
Inventor 唐铁石
Owner 唐铁石