Product Details
Flint clay is produced by sintering natural clay at 1250–1350℃. It is classified into different grades such as YNS45, YNS44, YNS43, and YNS42, based on Al₂O₃ and Fe₂O₃ content. Flint clay typically contains ~44% Al₂O₃ and ≤2% Fe₂O₃. Typical fired colors include pure white, light gray, and pale yellow-brown, with minor iron impurities. It has a refractoriness of up to 1750℃.
In refractory formulations, Flint clay serves primarily as an aggregate material. Its stable crystalline structure enables it to withstand high-temperature thermal and mechanical stresses, helping prevent abnormal shrinkage or structural damage during service.
Compared to raw clay, Flint Clay has already undergone a high-temperature phase transformation process and no longer undergoes significant volume changes when reheated. Therefore, it is particularly suitable for use in industrial furnaces and kilns where dimensional stability is a critical requirement.
Shandong Haixin has over 30 years of production history, and its production equipment and processes are among the leading in China. The refractory briquettes it produces are characterized by their pure white appearance, low impurity content, high density, stable physicochemical properties, and excellent refractory performance, making them ideal materials for manufacturing high-quality refractory bricks, daily-use ceramics, building materials, and clay crucibles.
Flint Clay
|
Brand Project |
YNS45 |
YNS44 |
YNS43 |
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|
A |
B |
A |
B |
C |
A |
B |
C |
|
|
Al2O3 % min |
47 |
46 |
46 |
45 |
45 |
44 |
44 |
43 |
|
Fe2O3 % max |
0.85 |
1.0 |
1.10 |
1.10 |
1.15 |
1.35 |
1.35 |
1.45 |
|
Bulk density g/cm³ |
2.58 |
2.56 |
2.55 |
2.53 |
2.51 |
2.50 |
2.48 |
2.45 |
|
Fire resistance ℃ |
1770 |
1750 |
1750 |
1750 |
1730 |
1730 |
1730 |
|
|
Impurity content % max |
2.0 |
2.3 |
2.3 |
2.6 |
2.8 |
3.0 |
||
|
Mixed grade materials % max |
5 |
5 |
10 |
10 |
||||
|
Granularity % |
0-25,0-50,0-150Or produce various particle sizes according to user requirements. Granularity:0-1mm,1-3mm,3-5mm,5-8mm,8-15mm,8-30mmCustom Production is available upon request. Fine powder: 80 mesh, 100 mesh, 180 mesh, 200 mesh, 220 mesh, 325 mesh Packaging: 25kg laminated woven bags, 50kg laminated woven bags, 1-ton bags, 1.25-ton bags, 1.5-ton bags |
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Lightweight Refractory Aggregate
|
Indicators
Grade |
Chemical composition % |
Particle capacity |
Cylinder compressive strength |
Water absorption rate |
Fire resistance |
Burning |
|
|
Al2O₃ min |
Fe2O3 max |
g/m³ max |
MPa min |
% max |
℃ min |
% max |
|
|
Clay lightweight aggregate grade 1 |
45 |
2.0 |
0.8 |
6.00 |
25 |
1670 |
0.6 |
|
Clay lightweight aggregate secondary |
40 |
3.0 |
1.0 |
6.00 |
25 |
1630 |
0.6 |
|
High-alumina lightweight aggregate |
65 |
2.0 |
0.8 |
6.00 |
25 |
1730 |
0.6 |
Hard clay (raw clay, raw lumps)
|
Grade Indicators |
Raw foam |
Raw block |
||
|
YNT-A |
YNT-B |
YNT-C |
YNT-D |
|
|
Al2O₃% min |
37.5 |
36.0 |
39.0 |
37.0 |
|
Fe2O3 % max |
1.20 |
1.60 |
1.20 |
1.50 |
Flint clay is primarily used as a raw material in the production of shaped and unshaped clay-based refractories, clay crucibles, daily-use ceramics, foundry sand, building ceramics, aluminosilicate fibers, and other related products.
■Clay bricks, low-alumina refractory bricks
■Clay refractory castables and spray coatings
■Refractory plastic
■Industrial furnace walls, furnace bottom, flue and other parts
■Furnaces and kilns in the metallurgical, power, cement, and chemical industries
■Stable raw material sources and controllable quality
■The calcination process is mature and the performance is highly consistent.
■Precise particle size distribution, suitable for a variety of formulations
■It can be supplied as a whole with the company's refractory bricks and castables.
■Support for long-term supply and technology selection services
Q1: What is the difference between it and raw clay?
A: Flint Clays are more stable in size and properties after being calcined at high temperatures, making them suitable for high-temperature applications.
Q2: In which refractory products is it mainly used?
A: It is mainly used in clay bricks, clay castables, plastics and other products.
Q3: Can you provide different granularities?
A: Yes, particle size grading can be customized according to the customer's formula requirements.
Q4: Is sintered sapphire suitable for high-temperature operating conditions?
A: Suitable for medium-low temperature to medium-high temperature furnace conditions; specific selection depends on the grade.
Q5: Do you support OEM/ODM cooperation?
A: Yes, we fully support OEM and ODM collaborations and can provide flexible solutions from product customization to full-chain services based on customer needs.
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