Zhengzhou Rongsheng

Cement Industry

With new dry firing technology as the core, it realizes cement production automation and high efficiency and environmental protection. Including pre-decomposition system outside the kiln, rotary kiln system and cooling system.

Cement Industry

Zhengzhou Rongsheng

Refractories for the new dry-process cement rotary kilm:

  • Pre-Heater

    High Strength Alkali-Resistant Castable Crust-Resistant Castable Alkali-Resistant Bricks
  • Decomposing Furnace

    High Alumina Low Cement Refractory Castable Anti-strip High Alumina Bricks
  • Tertiary Duct

    Special Castable For Rertiary Air Duct Silicon Mullite Bricks High Strength Alkali-Resistant Bricks
  • Rotary Kiln

    Special Castable For Kilneye Tabular Corundum Castable Steel Fiber Reinforced Refractory Castable Silicon Mullite Bricks High Wear Resistant Bricks Magnesium Iron Spinel Bricks Direct Bonded Magnesia Chrome Bricks Anti-strip High Alumina Bricks
  • Kiln Hood

    Anti-strip High Alumina Bricks Mullite Low Cement Castable
  • Grate Cooler

    Anti-strip High Alumina Bricks Mullite Low Cement Castable

Refractory Bricks For Cement Industry

High-strength Alkali Proof Castable

High-strength alkali proof castable have good corrosion resistance to alkaline gases and molten slag. This material is mainly used for lining of decomposing furnace, preheater system, pipng system and other industrial kilns.

Zhengzhou Rongsheng
Anti-crusting Castable

At high temperature, anti-crusting castable will form a silicon dioxide wear-resistant layer on the surface to prevent the penetration of the glass phase in the cement raw meal, thereby playing the role of anti-crusting. This material is mainly used in the areas that are prone to crust such as the feeder slope of the cyclone preheater, the rising flue, and the preheater cone.

Zhengzhou Rongsheng
Low Cement Refractory Castable

The series of low cement refractory castable mainly include high alumina, mullite and corundum castables. This series of products have the characteristics of high strength, erosion resistance, abrasion resistance, and excellent performance. At the same time, the material can be made into a quick-baking explosion-proof castable according to the user’s baking time requirements.

Zhengzhou Rongsheng
Steel Fibre Reinforced Refractory Castable

Steel fiber reinforced refractory castable is made by adding heat-resistant stainless steel fibers to the raw material to make castable have higher strength and thermal shock resistance, thereby increasing wear resistance and service life of the castable. The castable is mainly used for high-temperature and wearable parts such as kilneye, feeder, wear-resistant pier and power plant boiler lining.

Zhengzhou Rongsheng
Wear-resistant Refractory Castable

Wear-resistant refractory castable is made of high-strength refractory raw materials such as special grade alumina, fused corundum and silicon carbide as aggregates and fine powder, while adding fine power. The castable has the characteristics of good volume stability, high strength, good wear resistance, strong thermal shock resistance, grate corrosion resistance, and no cracking, no peeling,etc. The product is mainly used in severe erosion and wear parts of industrial kilns such as pelletized rotary kilns and coal burners.

Zhengzhou Rongsheng

Refractory Bricks For Cement Industry

There are many kinds of refractory bricks used in cement industry: Direct-Bonded Magnesite chrome Bricks, Magnesite chrome Brick, Magnesia spinel Brick, Anti-strip Alumina Brick, Silicon Mullite Brick, Series Alkali Proof Brick.

 

Direct-Bond Magnesite chrome Bricks

Direct-bond magnesite chrome brick is a product made from fused magnesite and chrome concentrate sintered from high purity or secondary purity . It is sintered under high temperature and ultra temperature with fewer foreign materials, where the glass phase centered in the triangular space and the crystalline phase bonds directly with the crystalline phase. Featured by low porosity, high compressive strength, strong wear resistance, good erosion resistance and thermal shock resistance capacities as well as anti-strip property,it applies to the calcining zone of dry- process cement rotary kin.

Items DMC-4 DMC-6 DMC-9a DMC-9b DMC-12
MgO%   ≥ 80 75 70 70 60
Cr2O3 %   ≥ 4 6 9 9 12
SiO2 %  ≤ 2.5 2.8 2.8 3.0 3.2
Apparent Porosity %   ≤ 18 18 18 19 19
MPa CCS   ≥ 40 40 40 40 35
0.2MPa Refractoriness Under Load  ℃  ≥ 1600 1600 1600 1580 1580
Thermal Shock Resistance,Cycle  (1100℃,water quenching)  ≥           4 5 5 5 5

 

Magnesite chrome Brick

Magnesite chrome brick is a product sintered under a temperature above 1600℃ till as is main materials, and is host crystal phase is periclase and magnesia-chrome spinal. solidifying procedures or be packed with sheet steel externally. Featured by good thermal shock resistance, corrosion resistance and anti-strip property, it applies to the calcining zone of dry-process cement rotary kin.

Items Magnesia-chrome brick
MGe-8 MGe-12 MGe-16 MGe-20
MgO % ≥ 60 55 45 40
Cr2O3,% ≥ 8 12 16 20
Apparent Porosity  % ≤ 21 21 21 21
CCS ,MPa ≥ 30 30 30 30
0.2MPa Refractoriness Under Load ℃≥ 1530 1550 1550 1550

 

Magnesia Spinel Brick

Item MLJ-70 MLJ-75 MLJ-80
MgO % ≥                70 75 75
Al2O3 %                 8-13 8-13 8-13
Fe2O3 % ≤ 1.5 1.5 1.5
CaO %  ≤ 2.0 2.0 1.5
SiO2 %  ≤ 3.0 2.0 1.5
Apparent Porosity %≤ 19 18 17
Bulk Density g/cm3  ≥ 2.95 2.95 3.00
MPa  CCS  ≥  45 45 50
0.2MPa Refractoriness Under Load ℃ ≥ 1600 1650 1650
Thermal Shock Resistance,Cycle  (1100℃,water quenching) 8 10 10

 

Anti-striping Alumina Brick and Silicon Mullite Brick

The anti-striping alumina brick produced by our company is produced with special bauxite chamotte by adding aragonite or ZrO2 and moulding under high pressure according to a certain proportion. Featured by strong anti-strip capacity, kalium , sodium, sulfur dioxide ,chlorine and basic salt resistance and low thermal conductivity, it is an ideal material for the transition zone and decomposing zone of cement kiln.

The silicon mullite brick produced by our company is produced with special bauxite chamotte by undergoing moulding under high pressure and sintering under high temperature. Featured by high ambient compressive strength and high structural strength. Good thermal shock resistance and wear resistance as well as strong anti-strip, it is an ideal material for the transition zone and decomposing zone of cement kin.cement kiln.

Items Anti-strip High Alumina Brick Silicon Mullite Brick
RSBR-70 AZM-1650 AZM-1680
Al2O3 %  ≥ 70 63 60
ZrO2% 6-8 -- --
Refractoriness ,℃ ≥ 1790 1790 1790
Bulk Density, g/cm3  ≥ 2.5 2.55 2.60
Apparent Porosity,% 24 20 21
CCS  MPa   ≥ 60 65 70
0.2MPa Refractoriness Under Load ℃  ≥ 1700 1650 1680
CC CWT    ≤ - 6 5
Thermal Shock Resistance,Cycle  (1100℃,water quenching)  ≥ 30 20 25
MPa   MOR ≥ - 12 15
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