Metallurgy

Filtration in Metallurgical Industry

Metallurgy refers to the process and technology of extracting metals or metal compounds from minerals and making them into metallic materials with certain properties through various processing methods. In the metallurgical process, in order to reduce input costs, equipment coolant and lubricating oil need to be filtered to remove impurities and achieve recycling. Hanke provides you with targeted metallurgical filtration solutions to help you reduce investment costs and protect downstream equipment.

For details, please refer to:

Metallurgy Filtration Solutions

Molten metal liquid is poured into some square containers.

Rolling Mill Coolant Filtration
Hydraulic & Lubricating System Filtration

Rolling Mill Coolant Filtration

Background
Rolling mill is the main equipment that makes metal blanks forming by rolling in the production of steel. The mill cooling system lubricates the surface of the rolled pieces and takes away the heat generated by friction and deformation in the mechanical forming process of the rolled pieces; In this process, it also removes the secondary iron oxide on the surface of the rolled pieces to prevent it from embedding in the work piece surface, thereby affecting the quality of the rolled pieces and causing damage to the equipment.
Problem
Many manufacturers recycle and reuse coolants to reduce production costs. The recycled coolant contains a large quantity of impurities, such as iron oxide formed on the surface of the rolled pieces and dust. When reused, these impurities can easily block the nozzles and increase equipment maintenance costs.
Solution
Therefore, these coolants are required to be filtered before reuse to achieve coolant cyclic utilization. Automatic backwash filters are generally employed for coolant filtration as it can automatically perform continuous filtration online and effectively remove solid particle contaminants from the coolant.

Multiple automatic backwash filters are installed in the iron and steel workshop.

Automatic backwash filters for rolling mill coolant filtration

Hydraulic & Lubricating System Filtration

Background
Lubricating oils are used among moving parts of various metallurgical equipment to play the role of lubrication, auxiliary cooling, rust prevention, cleaning, sealing and buffering, etc. They are widely used in centralized lubricating systems, hot rolling drive systems, cold rolling support roll lubricating systems, wire and bar mill lubricating system, etc.
Problem
With the production of steel, foreign matters generated due to equipment corrosion or aging, hydraulic oil or gear oil sludge and other impurities generated due to thermalization also accumulate in the hydraulic & lubricating systems. These impurity particles can cause equipment wear and affect the service life of equipment and the recycling of lubricants.
Solution
Therefore, hydraulic and lubricating oils need to be filtered and processed in time to extend the service life of the equipment. Cartridge filters are often adopted for hydraulic & lubricating system filtration to effectively remove the tiny particles in the system and protect the downstream equipment.

2 cartridge filters are installed in a lubricating oil filter.

Cartridge filters or lubricating system filtration