Description:
Compared with other companies, HA70SC has higher bulk density, smaller apparent porosity, higher strength, better thermal shock resistance and better product performance. This is because the HA70SC added 6% of α -alumina micro-powder and burned in 1420 ºC. The addition of appropriate amount of α -alumina micro-powder will promote the high activity of SiO2 in corundum, which is conducive to the formation of relatively dense network-like mullite binding phase in the matrix, thus significantly increasing the compressive strength and volume density of the product, densifying the structure, and improving the wear resistance of the product. Due to the formation of solid solution between Al2O3 and SiO2 , the grain of the material was refined and densified. Polycrystalline was used to buffer the thermal stress, so as to improve the thermal shock resistance of the material and greatly improve the service life of the product. The thermal conductivity of HA70SC is lower than that of magnesia-alumina spinel brick, which reduces the external surface temperature of kiln shell and is more energy saving than traditional silicon-mullite bricks
Feature:
• Outstanding resistance to chemical attack.
• Outstanding thermal-shock resistance Highest refractoriness.
• Excellent abrasion resistance.
Application:
Transition zone of cement rotary kiln.
Chemical composition and physical properterties
| Chemical Composition |
UNIT |
TYPI |
| SiC |
% |
11-13 |
| Al2O3 |
% |
65-69 |
| SiO2 |
% |
13-17 |
| Fe2O3 |
% |
1.6 |
| Physical Properties |
UNIT |
TYPI |
| Bulk Density |
g/cm3 |
2.7-2.8 |
| Apparent Porosity |
% |
17-20 |
| Thermal Shock Resistance - in air at 1100 °C |
cycle |
20 |
| Refractoriness Under Load |
°C |
1680 |
| Thermal Expansion - at 1000 °C |
% |
0.9 |
| Cold Crushing Strength |
MPa |
100-110 |
| Thermal Conductivity - at 300 °C |
W/mK |
2.45 |
| Note: The above datas are the representative average value measured in accordance with the test methods for general purpose and vary with the fluctuations of normal production conditions.These datas are provided as a technical service,sometimes may be adjusted, so they should not be regarded as the product index. |
Picture of products:
Package and transportation:
•Packing : Packed by sea-worthy wooden pallet + shrink plastic wrapped + corrugated board
Quality Control:
We are very careful in quality control so we control it from the beginning the raw material to the final products.
Company Profile:
• Founded in the 1979, reformed to joint-stock in 2002
• Professional manufacturer of refractories for cement kilns, total production capacity is 200,000 t/a
• The top 3 supplier of refractories for cement kilns in China
• Complete technology provider (covering from basic to acid refractories) 70% products manufactured for cement industry
• The 1st company to invent the Magnesia Hercynite brick in China
• The 1st company to invent the Ceramic tube for preheater worldwide
Our Services:
• Whole package refractory linings design for the kilns;
• Efficient and economical refractories recommendations;
• Provide the sample properties test report from authority institute (SGS or CNAS);
• Kilns linings installation supervision, inspection, evaluation on site;
• Offer measurement of the changes of the roundness in the rotary kiln shell during operation (Ovality measurement).
• Cooperated research and development, provide the best suitable products for different working conditions of the kilns;
• Adjoining one biggest seaport of East China-Qingdao Port, convenient logistics.
Production Facility:
R&D Equipment:
ISO & patented certificates:
Exhibition & customer visit:
FAQ
Q1 : Do you provide free samples?
A1 : Yes, free samples are available, generlly speaking, the buyer shall bear all the delivery cost.
Q2 : How can you control your quality?
A2 : For each production processing, LZR have complete QC system for the chemical composition and Physical properties. After production, all the goods will be tested, and the quality certificate will be shipped along with goods.
Q3 : What is your lead time?
A3 : Delivery Time:
(1) Peak time(Nov 1st-Feb 15th next year) Within 60 days from the date of receiving the advance payment
(2) Normal time (Feb 16th-Oct 31th) Within 30 days from the date of receiving the advance payment
Q4 : What is your payments terms?
A4 : We can accept 30% deposit, 70% balance to be against the BL copy or by LC, or other payment terms.
Q5 : Are you a trading company or manufacturer?
A5 : We are a manufacture for more than 40 years history. And you are welcome to visit us.
Q6 : What standards do you have?
A6 : Our products meet the standards, such as ASTM, ASME, AMS, DIN, JIS etc.
The third party testing is all available for us.
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