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Refractories for Cement Kiln
• Compound bricks for lining of rotary kiln
This kind of compound brick is a new develoiped products for alumina and cement rotary kiln. It is a new lining material integrate heavy refractorywirking layer with light heat-insulating layer. It is tested and proved of more than 20% energy saving after being applied in large scale rotary kilns.
Features of product:
• Integrated heavy refractory layer with light one, easy for application,labor and effort saving.
• Good performance at high temperature; peel-off resistance; anti-corrosion; excellent heat insulation; energy saving; temperature of kiln body can be deceased by 80-120 o C.
• Double durable life compared with other bricks for rotary kiln.
With the development of technology and dry kiln, the compound brick for rotary kiln will become the more optimum products for energy saving, lower cost and prolong kiln's working life.
2 High active compound brick for cement kiln
As a new lining material for sintering zone of new dry cement kiln and a new type of green environment protection product, high active brick has the feature of good heat-shock stability, alkali resistance and wear resistance, easily stick to kiln wall, and long working life.
Item |
Unit |
index |
Al 2 O 3 ≥ |
% |
60 |
Refractoriness ≥ |
o C |
1790 |
Softening Temp. under 0.2Mpa load ≥ |
o C |
1650 |
Liner Change after re-heating at 1500 o C for 2Hrs |
% |
+0.1/-0.4 |
Bulk Density ≥ |
g/cm 3 |
2.8 |
Pressure resistance at normal Temp. ≥ |
MPa |
80 |
Heat and Shock Stability(1100 o C water cooling) ≥ |
Times |
15 |
3.Modified Alumina Brick with Phosphate
High strength at high temp.,creep-resistance, high softening temperature, wera-resistance, high heat and shock stability, being used in the top of electric furnace, reflection furnace, steel laddle, buring zone and interim zone on cement rotary kiln
项目 item |
单位
unit |
指标 index |
LPG-75 |
LPG-80 |
AI 2 O 3 ≥ |
% |
75 |
80 |
耐火度≥
refractoriness |
o C |
1770 |
1770 |
常温耐压强度≥
pressure resistance at temp |
MP a |
60 |
80 |
0.2MP a 荷重软化开始温度≥
softening temp.under0.2MP a load |
o C |
1450 |
1500 |
热震稳定性 (1100 o C水冷)≥
heat and shock stability (1100 o C water cooling) |
次
times |
20 |
20 |
本公司研制的改性磷酸盐结合高铝砖 PG-75、PG-80，其突出特点是高温强度高、蠕变性小、荷软高、耐磨、热振稳定性好等。用于电炉顶、反射炉、钢包和水泥回转窑烧成带，过渡带均取得良好效果。
体积密度≥
buik density |
g/cm3 |
2.7 |
2.8 |
4. Silicon-mullite Bricks
Strong stability of anti-corrosion and good wear-resistance, not easy to sticking on kiln wall, ideal refractory and lining material for cooling zone in new dry cement kiln, also ideal materail in coal or electric boiler, where eroding heavily exists.
项目 item |
单位
unit |
指标 index |
工作层
working layer |
隔热层
heat-insulating layer |
AI 2 O 3 ≥ |
% |
70 |
45 |
耐火度≥
refractoriness |
o C |
1790 |
|
0.2MP a 荷重软化开始温度≥
softening temp.under0.2MP a load |
o C |
1600 |
|
重烧或烧后线变化 1500*2h
linear change after re-sintering or sintering |
% |
+0.0
-0.4 |
|
体积密度≥
buik density |
g/cm3 |
>=2.8 |
|
常温耐压强度≥
pressure resistance at normal temp |
MP a |
80 |
20 |
热震稳定性 (1100 o C水冷)≥
heat and shock stability (1100 o C water cooling) |
次
times |
15 |
|
导热系数 (平均温度350±25)≤
heat conductivity (average temp 350±25 o C) |
W/m.K |
|
0.75 |
5. Steel Fibre reinforced pouring material
Mainly used for mouth of cement kiln, the hea-resistance chains of wet rotary kiln. The cooler and coal-spraying pine of cement kiln.
指标 index |
单位
unit |
普通类 standard |
高强类 high strengthened |
FA |
FC |
FHA |
FHC |
AI 2 O 3 ≥ |
% |
79 |
8.3 |
70 |
80 |
常温抗折强度≥
Bending resistance at normal temp |
110 o C |
MPa
|
9.0 |
9.0 |
10.0 |
12.0 |
1100 o C |
5.5 |
6.5 |
10.0 |
12.0 |
常温耐压强度≥
Pressure resistance at normal temp |
110 o C |
MPa
|
70 |
70 |
70 |
80 |
1100 o C |
40 |
50 |
70 |
80 |
1100 o C室温水急冷急热循环5次后强度≥
The strength from 1100 o C to normal temp after 5 times of sharp cooling and sharp heating |
MPa |
4.5 |
5.5 |
5.0 |
5.0 |
1100 o C烧后线变化率
Linear change after burning at 1100 o C |
% |
± 0.4 |
± 0.5 |
± 0.4 |
± 0.5 |
6-Light Alkali-resistance castable material
Mainly used in the place where is alkali corrosion, the preheater in the pre-decomposing system of cement kiln, pipelings of decomposing furnance and pre-heating and decomposing zone of dry rotary kiln
产品型号
Grade |
型号 type |
耐碱性
（最低等级）
alkali-resistance
(the lowest degree) |
110 o C烘干体积密度
kg/m 3 ≤
dried bulk density at 110 o C |
抗折强度≥ MPa
Bending-resistance |
抗压强度≥ MPa
compressive strength |
3h恒温线变化不超过1.5％的试验温度（ o C）
test temp when linder change at constant temperaure less than 1.5% for 3h |
110 o C烘干
stoving |
1000 o C烧后
after burning |
110 o C烘干
stoving |
1000 o C烧后
after burning |
优等品
high quality product |
Q-12D |
一级 first grade |
1650 |
4.0 |
3.5 |
35 |
30 |
1200 |
Q-13D |
一级 first grade |
1700 |
4.0 |
3.5 |
40 |
35 |
1300 |
一等品
first grade |
Q-12 |
一级 first grade |
1600 |
2.5 |
- |
25 |
- |
1200 |
Q-13 |
一级 first grade |
1650 |
3.0 |
- |
30 |
- |
1300 |
7. High strength refractory castable
Mainly used in the easy damaged parts under high temp. in hot-working kiln and furnaces. The front mouth of the kiln for cement pre-decomposing, coal spraying pipe with three air tube
项目 item |
单位
unit |
指标 index |
优等品
high quality product |
一等品
first grade |
AI 2 O 3 ≥ |
% |
93 |
93 |
Si 2 O 2 ≤ |
% |
0.5 |
1.0 |
不同温度处理后抗压强度≥
The pressure resistance after being processed at different temp |
110 o C |
MPa |
80 |
60 |
1100 o C |
100 |
70 |
1500 o C |
120 |
100 |
不同温度处理后抗折强度 ≥
The bending-resistance after processed at different temp |
110 o C |
MPa |
8 |
6 |
1100 o C |
9 |
7 |
1500 o C |
10 |
9 |
线变化率
The linear change |
1100 o C*3h |
% |
≤ 0.5 |
± 0.5 |
1500 o C*3h |
≤ 0.5 |
± 0.5 |
110 o C体积密度≥
bulk density at 110 o C |
g/cm 3 |
2900 |
2900 |
耐火度≥
refractoriness |
o C |
1800 |
1800 |
8. Others Castable refractories
Alkli resistance castable, Alkli resistance high strength castable refractory, high alumina, low cement content castable, half self-flowing castable for coal spraying tube, high strength low cement content corundum castable and son on. |
