I. DH series dry roll granulator--Product Overview

The dry roll granulator adopts the dry roll pressing technology to compress the powdery material with water content ≤ 5% into pieces or blocks, and then crush the whole granules and sieving the process to make the slab materials change. A granular material that meets the requirements for use.

Powder granulation technology is a major branch of powder and granule process. With the rapid development of modern industry and the automation of production process, its importance is increasingly evident. "Powdering of powdered products" has become an inevitable trend in the world's powder aftertreatment technology. The processing of granules on powdered products is mainly reflected in several aspects:

1.1. The quality of various powder raw materials is reduced, impurities must be removed after grinding, and then high-grade materials are granulated.

1.2. Environmental factors, including the treatment of recycled dust and the use of coarser particulate materials to avoid dust and smoke pollution to the air.

1.3, automated high-intensity production, requires good fluidity of the feedstock.

1.4, modern food to the rapid or convenient development.

1.5. Reduce dust pollution and improve working conditions.

1.6, to meet the production process requirements, such as increasing porosity and specific surface area, improve heat transfer and so on.

1.7. Improve the physical properties of the product (such as fluidity, gas permeability, bulk density) to avoid segregation, pulsation, agglomeration, bridging, etc. in subsequent operations (drying, sieving, metering) and use processes (metering, batching, etc.) Adverse effects, reduced pollution, improved appearance, improved flow, ease of storage and transportation, control of solubility, control of porosity and specific surface area, etc., create conditions for automation and containment of production and use processes.

1.8. The high development of agriculture requires the use of high-quality fertilizers to slow down the need to control the quality of fertilizers. At the same time, non-granular fertilizers are not convenient for mechanical automatic fertilization and are prone to bad agglomeration. The dry roll granulator adopts the dry roll pressing technology to compress the powdery material with water content ≤ 5% into pieces or blocks, and then crush the whole granules and sieving the process to make the slab materials change. A granular material that meets the requirements for use. Dry roll granulation mainly relies on external pressurization to force the material to pass through the gap between two opposite rotating rolls, forcibly compressing into a piece of cake. During the rolling process, the actual density of the material can be increased by 1.5~3 times. Thereby achieving a defined particle strength requirement.

 

2, DH series dry roll granulator - working principle

The raw materials are evenly fed into the feeding hopper through the quantitative feeder, and the pairing machine uses a pair of rolls with hole holes to leave a certain gap with each other, and the two rotate in opposite directions at the same rotation speed. One set of roll chocks does not move in the frame, and the other set of roll chocks move upstream of the frame rails, pressing against each other by means of hydraulic cylinders. A plurality of hole holes of the same shape and size are regularly arranged on the surface of the roll, and the troughs are aligned with the troughs. At this time, the dry powdery material continuously and uniformly feeds the two rolls from above and between the two rolls, and the material first flows freely, and then enters the biting area and is gradually bitten into the trough by the rolls. With the continuous rotation of the roll, the space occupied by the material is gradually reduced and gradually compressed, and reaches the molding pressure. Subsequently, the pressure gradually decreases, and the pressed block loses its own weight and falls off the hole of the hole to enter the crushing and granulating device, and the obtained finished product is a granular qualified product, which is subjected to scale packaging. The fine powder and the unqualified super large particles from the powder mouth are re-entered into the hopper feeder by the returning auger and mixed with the fresh material to be added to the pre-feeding hopper to enter the next process.

 

3, DH series dry roll granulator - equipment features

◆ No need for any additives, direct granulation of dry powder;

◆The particle strength can be adjusted, and the strength of the finished product can be controlled by adjusting the pressure of the roll;

◆Cycle operation to achieve continuous production and high output of finished products;

◆The material is forcedly compressed by mechanical pressure without any additives, and the purity of the product is guaranteed;

◆The direct granulation of dry powder does not require subsequent drying process, which is more conducive to the connection and transformation of existing production processes;

◆The particle strength is high, and the increase of the bulk specific gravity is more significant than other granulation methods, especially suitable for increasing the proportion of product accumulation;

◆Adapt to a wide range of raw materials, the particle strength can be adjusted freely according to different materials;

◆Compact structure, convenient maintenance, simple operation, short process flow, low energy consumption, high efficiency and low failure rate;

◆ It can control environmental pollution, reduce powder waste and packaging costs, and improve product transportation capacity;

◆Feeding and feeding device adopts frequency conversion stepless adjustment control, high degree of automation, can realize one-person multi-machine control, and has the characteristics of low labor intensity and long-term continuous operation;

◆The main transmission components are made of high quality alloy materials. The stainless steel material, titanium material, chrome and other surface alloys greatly improve the wear resistance, corrosion resistance, high temperature resistance and pressure resistance, so that the machine has a long service life.

4, DH series dry roll granulator - suitable materials

Fertilizer: potassium sulfate, potassium chloride, Russian red potassium, compound fertilizer, ammonium chloride, potassium nitrate, monoammonium phosphate, diammonium phosphate, ammonium sulfate, carbon, ammonium hydrogen phosphate.

Powder materials: antioxidant, bromochlorohydantoin, sodium cyanide, sodium dichloroisocyanurate, sodium trichloroisocyanurate, cyanuric acid, bleaching powder, zinc oxide, lead oxide, potassium carbonate, barium carbonate, Calcium chloride, calcium hydrogen phosphate, sodium metasilicate, sodium orthosilicate, cryolite, aluminum fluoride, brake powder, rubber and plastic additives, white carbon black, calcium aluminate, heavy calcium, calcium, carnallite Phosphate powder, metal powder, filler, feed additive, oxaloin, nicotinic acid, nicotinic acid amine, pharmaceutical intermediate, steelmaking auxiliary, snow melting agent, swelling, alumina powder, phosphogypsum, desulfurization gypsum, beneficiation Agents, environmentally friendly materials, and graphite, carbon black, etc.