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Fly ash winnowing and comprehensive utilization

Fly Ash Drying and Conveying System

浏览 Author Admin Browse Published 17/02/12

Fly Ash Drying and Conveying System

The fly ash dryer equipment produced by Ruiguang Machinery is the key equipment necessary to produce the fly ash drying conveying system and the fly ash drying production line . The fly ash is dried, ground and sorted to achieve fly ash. Comprehensive utilization; when the hot air temperature of the hot blast stove of the fly ash dryer reaches 350 ℃, the equipment starts to work. The wet material conveying equipment sends wet fly ash with a moisture content of less than 25% into the smashing feeder. The smashing feeder has the dual functions of smashing and conveying, so that the material is evenly sent to the belt conveyor, and then After entering the storage bin and passing through the screw feeder, the fly ash is evenly fed into the drying drum of the fly ash drying equipment. The Ruiguang fly ash drying system saves one-third of the energy compared with the traditional drum dryer. The production cost has been greatly reduced, and the technology is at the highest level in China.

Ruiguang fly ash dryer equipment is mainly used to dry fly ash or granular materials within a certain humidity range, such as small-grained clay, coal, fly ash, iron powder, ore, quartz sand, kaolin and other materials. The chemical industry is used for the drying of small particles that cannot afford chemical changes, and are not afraid of high temperature and dust pollution.

Fly Ash Drying and Conveying System

With the country's increasingly stringent environmental protection requirements and the use of waste energy, dry fly ash as a mixed material for cement production has a better market, and has been in short supply, and has become a resource. The cement industry has adopted less clinker, Multi-powder, low-cost cement production technology can consume power, metallurgy, coal industry's fly ash, slag, coal gangue and other industrial waste to a large extent. Therefore, fly ash dryer equipment, fly ash drying conveying system and fly ash drying production line have become a powerful guarantee for waste resources to produce low cost and high performance green cement.

The process structure of the fly ash drying and conveying system includes: 1. heat source system; 2. powder conveyor conveying system; 3. drying system; 4. dust removal system; 5. silo; 6. electric control system. Wet fly ash with a moisture content of 25% or less is sent to the dryer (measureable) through a belt conveyor. After drying, the moisture content is less than 0.5%. The coarse ash is sent to the coarse ash warehouse, and it can also enter the fly ash ball mill. After further processing, the ash and ground ash after the dust collector has reached the first-level ash level, and it can be sold to the finished product warehouse for external sale.

The process of Ruiguang mechanical fly ash drying and conveying system: the kiln head of the dryer is equipped with a cyclone dust collector, and the back of the dust collector is equipped with a DMC pulse bag dust collector. Fly ash after drying at the outlet of the dryer enters the ball mill for further processing. The hopper at the outlet is equipped with a manual plug valve → Roots fan → pneumatic conveying equipment → ash conveying pipeline → sorting → storage → three-level ash Returning to the ball mill for processing, the fly ash is sent to the ash warehouse for loading via the powder conveyor.

Fly Ash Drying and Conveying System

Working principle of fly ash dryer equipment <br /> The fly ash dryer is suitable for drying industrial dust and waste residues such as fly ash, phosphogypsum and titanium gypsum. Its working principle is as follows: powdery or granular pulverized coal The ash is conveyed by the belt feeder to the feeder, and then the fly ash is conveyed into the drying drum by the feeder. The fly ash is evenly dispersed with the hot air under the turning of the plate reader evenly distributed in the drying drum. Contact to achieve the purpose of drying heat and mass. The dried fly ash is discharged from the finished product at the end of the drum through the unloader, and the dry product is output by the belt discharger to complete the drying process.

Fly ash dryer equipment performance characteristics of. It has a compact structure and a small footprint, which is one-half of the land occupied by a single cylinder drying with the same output. It has reliable work, low energy consumption, high thermal efficiency, good material drying effect, easy automation control, and few operators. .
Due to the accumulation of fly ash for a long time, there will be large blocks in the fly ash. If the large blocks enter the cylinder and are not crushed in time, it will easily cause blockage or the internal water will not be cleaned. Our company is drying The inner cylinder of the machine is provided with a scattering and automatic uniform distribution device, which solves this difficulty.
The particle size of fly ash is relatively fine. During the drying process, it is dried under negative pressure. If the wind pressure is too small, the heat source cannot pass quickly, and the yield cannot be increased. If the wind pressure is too large, the un-dried fine powder is brought into the finished product, so the stability of the final moisture of the material cannot be guaranteed. Our company designed a receiving device inside the cylinder, which completely solved the above problems.

Technical parameters of fly ash dryer equipment

Product specifications (m) Processing capacity (t / h) Feed moisture (%) Discharge moisture (%) Host power (KW) Coal burning value (kcal / kg) Inlet temperature (℃)
Φ1.5x14 10-15 27 ± 3 ≤8 15 ≥5500 420 ± 10
Φ1.8x14 15-20 27 ± 3 ≤8 18.5 ≥5500 420 ± 10
Φ2.0x20 20-25 27 ± 3 ≤8 18.5 ≥5500 420 ± 10
Φ2.2x20 25-30 27 ± 3 ≤8 twenty two ≥5500 420 ± 10
Φ2.4x20 30-35 27 ± 3 ≤8 30 ≥5500 420 ± 10
Φ2.6x22 35-40 27 ± 3 ≤8 30 ≥5500 420 ± 10
Φ3.0x24 45-50 27 ± 3 ≤8 37 ≥5500 420 ± 10
Φ3.2x26 50-55 27 ± 3 ≤8 45 ≥5500 420 ± 10

Matters needing attention in fly ash drying and conveying system
1. Control of initial moisture. The moisture content of wet fly ash just discharged from the power plant is generally around 45%. At this time, drying immediately, the production cost is large, and it also puts great pressure on the equipment. Store in a well-ventilated place for about 15 days, reduce the water content to about 20%, and then treat it.
2. Selection of dust collector. Because the fly ash particles are fine and light in density, it is easy to be carried away by the air flow under the negative pressure state after drying, which causes the fluid medium to change and the moisture content of the dust-containing gas is large. The dust collector should be selected according to the above process conditions.
3, dry material conveying equipment should pay attention to sealing.
4. Selection of hot blast stove. The hot blast stove should choose a furnace type with high efficiency, which can fully use inferior coal, and easy to operate.

Ruiguang Machinery has a complete fly ash drying production line. Wet wet fly ash is dried and stored with reasonable energy consumption and simple processes to add value and turn waste into treasure. Welcome to consult and purchase.

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