INDUSTRY BACKGROUND

Cold-solidified pellets of iron ore concentrate are a new type of furnace charge introduced in recent years. Because of its environmentally friendly and energy-saving characteristics during production and use, large-scale production plants have been built in the United States, Japan, Sweden and other countries for use in various smelting furnaces.

The preparation of metallurgical pellets is an important part of the metallurgical process. It can not only improve the metallurgical physical and chemical properties of the material, but also is an important way to achieve resource utilization of industrial solid waste and circular economy.

ORE PREPARATION

Grinding to the required particle size. The particle size of iron ore is one of the key factors affecting the quality of the pellets. Traditional grinding equipment, such as ball mills, often consumes high energy, whereas vertical roller mills (VRM) are preferred for iron ore grinding due to their high efficiency and low energy consumption.

MIXING AND PELLETIZING

Adding water and additives to form green pellets. During the mixing process, the proportions of additives (such as binders, bentonite, limestone, etc.) should be strictly controlled to ensure uniform mixing and avoid excessive or insufficient additives that could affect the structure and quality of the pellets.

CALCINATION

Sintering of the green pellets. The sintering process uses coal powder as the fuel. Coal powder is typically less expensive than other traditional fuels, such as natural gas or heavy oil, and using coal powder can effectively reduce fuel costs and help improve the sintering efficiency to ensure the pellets achieve the desired hardness and strength during the sintering process.

Zenith has developed and produced new products such as vertical roller mills and European grinding mills, offering integrated grinding solutions for bentonite, iron ore, coal powder, and quicklime. These solutions help the metallurgical industry achieve greener, more energy-efficient, and environmentally friendly production goals.

bentonite

iron ore

coal powder

quicklime

THE PROCESS OF GRINDING SYSTEM

Grinding stage

Material of suitable size is fed into the main machine for grinding, and the fine powder after grinding is sent to the analyzer for grading under the action of the air flow of the fan, so that the fine powder with qualified fineness can enter the collecting stage.

Collecting Stage

The dust gas enters the cyclone collector through the outlet pipe. Under the action of centrifugal force, most of the finished fine powder is separated. Redundant gas is discharged and sent to pulse dust collector. Then it becomes clean gas. Fine powder collected by cloth bags is transported to the conveying stage through screw conveyor.

Conveying Stage

The finished powder collected by dust collector and cyclone collector is sent by screw conveyor to the next process or into finished product tank.

CORE GRINDING EQUIPMENT

LM VERTICAL ROLLER MILL

Capacity: 10-170T/H

Fineness: 0.84-0.037mm

Performance Advantages:

New grinding device

Automated electronic control system

Drying and grinding two-in-one

High security, all-round monitoring equipment

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MTW EUROPEAN TRAPEZIUM MILL

Capacity: 3-60T/H

Fineness: 1.6-0.045mm

Performance Advantages:

Patented product

Thin oil lubrication system

Energy saving, environmentally friendly

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CUSTOMER CASES

Iron ore Pellet and PCI Project

Processing materials: iron ore and coal

Finished product fineness: 200 mesh

Finished product use: special alloy metallurgical pellets and PCI project

Equipment used: LM vertical roller mill

Bentonite Powder Making Project

Processing materials: bentonite

Finished product fineness: 200mesh/325mesh

Finished product use: metallurgical pellets,drilling mud

Equipment used: MTW European trapezium mill

MORE CASES FOR YOUR REFERENCE

On-site inspection and customization are available

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PURSUING THE ZENITH TECHNOLOGY AND QUALITY

Shanghai Zenith Machinery Co., Ltd. is a hi-tech enterprise specializing in the research, development and production of industrial powder grinding equipment.

We focus on the needs of customers in different fields, and our product processing range covers 1-3mm coarse powder, 20-400mesh fine powder, 400-1250mesh ultrafine powder and 1250-3250 mesh micro powder. Our equipment have got ISO international quality system certification, European Union CE certification and Customs Union CU-TR certification.

At present, our service network has covered more than 180 countries and regions in Asia, Africa, Europe, America and Oceania, and established overseas offices in more than 30 countries.

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