LMM Group is one of the pioneers on developing desulphurization lance for iron pretreatment ,and has unique design on the construction of the lance. The refractory is made by steel fibre reinforced ultra-low cement castables with corundum,high quality bauxite and mullite as main materials. With ten years of experience in continuous improvement, Beijing Lirr’s desulphurization lance is characterized as stable quality,no-choking,no-deformation,good resistance in thermal shock and slag erosion. The service life can be prolonged by repairing maintenance.
Dephosphorization lance for iron pretreatment
Although the metal structure of dephosphorization lance is similar to that of desulfurization lance,the use environment is quite different. Based on the successful experience of developing desulfurization lance, according the requirements of iron dephosphorization, LMM Group R&D personnel developed dephosphorization lance with the characters of stable quality, good service performance and long life,and rank in the leading position in China.
Desulphurization KR stirrer
This product is developed with steel fibre reinforced alumina-mullite based ultra-low cement castables and characterized with stable quality,high strength,good erosion resistance and thermal shock resistance. They have shown good service performance,and ranked in leading position in China.
Pre-cast shapes for electrode area of LF furnace
This product employees corundum,fused spinel,fused mullite as raw materials,and show the features of high strength,excellent
thermal shock resistance and erosion resistance,and long-service life.
Refractories for CAS-OB refining
LMM Group has unique design on CAS cover. The refractories are developed by ultra-low cement castables with corundum,spinel and mullite as the main raw materials. They have good performance on stable quality,high strength,good erosion resistance,good spalling resistance and long service life
Argon lance for steel ladle
LMM Group has unique design on the construction of argon lance. The refractory is made by steel fibre reinforced ultra-low cement castables with corundum,spinel or chromium as main materials. The lance is characterized as stable quality,no-choking,high strength,good resistance in thermal shock and slag erosion.
Desulphurization lance for steel ladle
LMM Group has unique design on the construction of argon lance. The refractory is made by steel fibre reinforced ultra-low cement castables with corundum,spinel or chromium as main materials. The lance is characterized as stable quality,no-choking,high strength,good resistance in thermal shock and slag erosion.
Refractories for RH refining
LMM Group as the capability to design and manufacture full range of refractories used for RH furnace and can supply general refractory contractors. These materials are characterized with high refractoriness under load,high strength,good erosion resistance and thermal shock resistance
Refractories for RH refining
Splash isolation cover for VD furnace
The refractory is made by steel fibre reinforced ultra-low cement castables with corundum as main materials,and characterized as good thermal shock resistance,erosion resistance,and no spalling in use.
Fluid field simulation
Equipped with state-of-art water simulation and digital modeling lab for thermal devices used for steelmaking, LMM Group can provide steel mills with lab simulation on fluid field,
thermal filed and particle movement track,etc.of high temperature devices such as ladle,tundish and re-heating furnaces.
Those simulation can provide scientific evidences to design better and long lasting refractory lining for ladle and tundish.
Comprehensive refractory design
The selection of refractories and zone lining concept are the important parts in comprehensive refractory management for high temperature devices. Based on water simulation and modeling tests and enriched experience of our technical staff, LMM Group can design and provide the mostly appropriate refractories and zone lining as per customers’ needs and working conditions of different zones in ladle lining so as to increase the service life of refractories.
Design and production of mould and installation tool
The design of moulds and necessary tools for refractory installation is also the important part for comprehensive refractory management. The project and design team at LMM Group is composed of talent professionals from mould design,mechanical processing and thermal engineering. Together with refractory engineers,they can develop unique equipment and tools for refractory installation and maintenance according to the needs on site. Those equipment and tools can ensure fluent and effective installation and also refractories,provided by LMM Group,to reach the maximum performance. The mould,designed especially for the installation of monolithic working lining and safety lining,is patented by LMM Group.
Joint development for new product
LMM Group has its own strong R&D center,which is in charge of new product,new process and technology development,project assessment,technical achievement verification,patent application and technical documentation.
R&D center has 400 technicians,which is one-third of the total employees. About 150 professionals in R&D center,accounted for 14. 5%of total employees,focus on R&D,which is composed of 5 senior engineers of professorship, 18 senior engineers, 5 Ph. Ds and 30 M. Scs. The technical staff covers all the areas from refractory materials to mould design,mechanical processing,thermal engineering,metallurgy,quality inspection,etc. Team working of professionals from different fields ensures Beijing Lirr the capability to develop new refractory products,design for industrial furnaces,mould design and manufacturing,refractory installation,material quality inspection and test and on-site technical support.
Since the establishment of the company, LMM Group continues to set up joint project every year together with steel mills in a timely manner to develop new product,new technology,new process to meet customers’needs especially on energy saving and consumption reduction. Up to now, Beijing Lirr had acquired 33 patents, 16 technical achievements passed the nation’s assessment and more than 100 technical know-hows with self-owned intellectual rights.
Comprehensive service
LMM Group has a comprehensive sales and service network composed of 50 offices near steel mills in China and offices in U.K,. Ukraine, Russia and Indonesia.
LMM Group had acquired the professional license for thermal furnace project and possesses the team to conduct installation and technical support on its own.
Based on the strength on product,technology and service, LMM Group will spare no effort on providing comprehensive refractory management to best meet the needs of steel mills in China and in the world.
Comprehensive refractory design