Basic Info.
Sizes
as Customer′s Request
Transport Package
1mt Jumbo Bag or as Per Buyer′ S Requiremen
Specification
Al2O3: 65%-85%
Product Description
Ceramic foundry sand:
Ceramic foundry sand" has been recognized by domestic and foreign casting partners, and its use is also expanding. Resin sand, water glass sand, clay sand, lost foam, V method, etc. We would like it to bloom, service and contribute for casting!
Ceramic foundry sand is made by sintering fine bauxite ore. Bauxite is the main ore used to produce Aluminium and consists 75% of Aluminium Oxide. It is a hard and unyielding abrasive in spherical shapes.
Advantage:
1. Low thermal expansion rate
2.high heat resistance
3. Vulnerability
4 Excellent reusability
Applications
Bauxite beads are Often used to replace brown fused aluminium oxide, Bauxite beads can be used with conventional abrasive blasting equipment, air-compressed pressure and suction jet blasting equipment. Sintered bauxite is also used for the following applications: antiskid flooring, carving etching, finishing, grinding, lapping, polishing, rock tumbling, lapidary, sandblasting, slurry mixes, surface preparation and tumbling. It is exceptionally well suited for use with air-compressed jet blasting equipment, both pressure and suction.
Specification for Sintered Bauxite
Main technical indicators of Ceramic foundry sand
| /Main Chemical element | Al2O3:65~85%,Fe2O3≤5%,TiO2:3.0~4.5%,SiO2:12~25% |
| Grain shape | spherical) |
| /Angle Factor | ≤1.1 |
| /granularity | 3.0mm~0.053mm(6mesh~270mesh) |
| /Bulk Density | 1.95~2.05g/cm3 |
| Refractoriness | >1800ºC |
| Thermal expansion rate | 0.13%(1000ºC10)(1000 degrees heating for 10 minutes) |
Process flow:
Ore (aluminum bauxite ore)-Electric arc furnace -melting -90-125v Voltage 90-125v -Air compressor -3-8kg/cm2 pressure 3-8kg/cm2 -Rapid cooling -Screening-According to the granularity requirements -Foundry sand(Ceramic foundry sand)
Why we choose Ceramic foundry sand:
(1) Ceramic foundry sand has a high refractory temperature and can meet the refractoriness requirements of various castings.
(2) Ceramic foundry sand has a nearly spherical shape, has good fluidity and filling performance, and the amount of binder to be added is also low, which is not only economical, but also the castings are not easily damaged after pouring.
(3) Ceramic foundry sand has the characteristics of low thermal expansion. For castings, which can prevent casting defects caused by the expansion of molding sand, and can improve the dimensional accuracy of complex castings.
(4)The high strength and low damage of Ceramic foundry sand will not break the sand when it is recycled and reused. The recycling rate is high and the amount of dust is small, which can improve the working environment and reduce the foundry waste. This is in line with the environmental protection requirements of the times.
Package
1MT Jumbo bag
Standard exporting package for sea transportation or air delivery
Special packing requirement is acceptable.
The physical and chemical properties of Ceramic foundry sand:
| Grain shape | spherical | Coefficient of expansion | (20-1000ºC)6×10ºC |
| color | Black-brown
| granularity
| 6~270(3.36~0.053mm)
6~270mesh(3.36~0.053mm) |
| Refractoriness | >1800ºC
| AL2O3 | 65-85%
|
| Bulk density | 1.95-2.05g/cm3
| Fe2O3 | ≤5%
|
True density
| 3.4g/cm3
| SiO2 | 12~25% |
Thermal conductivity
| (1200ºC)5.27W/M.K | TiO2 | 3~4.5%
|
| pH pH value | 7~8 | | |
APPLICATION:
At present, ceramic foundry sand is widely used in resin sand (furan resin, phenolic resin), water glass sand (organic fat, CO2 hardening), coated sand. Suitable for all kinds of metal castings, such as: carbon steel, alloy steel (high manganese steel, high chromium cast iron), cast iron, cast copper and so on.
1.Furan resin molding
2. phenolic resin for coated sand molding, core making
3.Alkaline phenolic resin molding, core making
4.Water glass molding
5.Lost foam casting
Application conclusion of Ceramic foundry sand:
Ceramic foundry sand is a non-quartz type artificial sand and it is suitable for various casting methods such as: V method, VRH, lost foam, investment mold, general sand type (clay sand, water glass + CO2 hardening), resin sand, etc, and it is also suitable for the production of castings of various binders and various metal materials, which can not only greatly improve the quality of castings, but also easy sand cleaning, and the sand mixing process is simple and convenient (large-scale cast steel plant single-piece small batch local sand, a small amount of sand artificially mixed). It can be used for most castings, especially for castings with high quality requirements.
It is worth noting that in the use of water glass CO2 hardened sand, the dried core and type should not be dried on the kiln (if drying, must control the heating rate). With the development of the foundry industry and the requirements of social and environmental protection, there will be more and more manufacturers using ceramic foundry sand locally and completely. It has been praised as the environmentally friendly (GREEN BEADS) casting material, which has a good prospect of promotion and use.
Ceramic foundry sand has good reuse performance: low requirements for sand treatment equipment, low energy consumption and low cost for sand treatment. The sand recovery rate reached 98%, produce less casting waste. Because of the absence of binder, the lost foam filling sand has higher recovery rate and lower cost, reaching 1.5-2kg/ton of sand consumption of castings.
In recent years, lost foam casting enterprises have been affected by many factors, resulting in low qualified rate of finished castings. Among them, the high production cost of castings, high defect rate and low quality have become the three problems in the lost foam casting enterprises in China. How to solve these problems and improve the cost performance of casting products at an early date has become one of the top tasks of domestic foundry companies. As we all know, the choice of sand in the casting process is a crucial part of the whole process. Once the sand is not properly selected, it will affect the whole situation. Therefore, the lost foam casting enterprise should make more efforts in the selection of sand.
According to relevant data, most domestic foundry companies have improved their choice of sand, rejecting the traditional low-priced quartz sand or forsterite sand, and using the new type of ceramic foundry sand to improve the casting problem. This new type of sand is a product of school-enterprise integration, which has the advantages of high refractoriness, good fluidity and high gas permeability. It solves the defects in casting production to a certain extent, and has been widely concerned by the international foundry industry. The three major problems of casting cost, defective rate and quality of lost foam casting enterprises have been effectively alleviated, and ceramic foundry sand has also been loved by many enterprises.
Our Advantage:
1. We are a manufacturer, which can control the cost easier than trade company also can give you answer more quickly.
2. As a manufacturer, we know much in technique and can give you more support in technique problem.
3. Professional and experienced service team, specialized in refractory production ,more than 10 years.
4.Our products are complete in specifications with various of sizes.
5. We enjoy a good reputation in the customers in domestic and overseas markets.
6. Large production capacity, short lead time of products.
7. 24*7 online service.
8. OEM service available
We also can according to your need to customize different type required.
Any interest in my product, pls feel free to contact with me, you also can call me directly.
I am here waiting for you.
Address:
Room 2203, Bldg 1, Dist 3, Greenland Center, Erqi Dist, Zhengzhou, China
Business Type:
Manufacturer/Factory
Business Range:
Metallurgy, Mineral & Energy
Management System Certification:
ISO 14001
Company Introduction:
Sinocean Industrial Limited is an investor, producer and supplier of calcined bauxite & refractory products to a wide variety of industries throughout the world.
Our factory has the well-equipped facilities and excellent skills throughout all stages of production, which makes annual capacity exceeds 60, 000 tons. Good quality raw materials, process making strictly, uniform sintering and compact structure, which gained the superior and satisfactoried bauxite. Based on bauxite, we develop different kinds of refractory fire bricks and castables serving steel plant, iron making plant, glass factory, cement plant etc.
Sinocean mainly produce welding grade bauxite, HFST bauxite, porcelain insualtor bauxite, cement grade bauxite, refractory grade bauxite, refractory fire bricks, refractory castables, insulation materials, and further more, we have close relationship with producers ofdead burnt maganisiaand calcined kaolin due to our long business involved in refractory and abrasive industries.
Sinocean is growing fast but always holds principle of first quality, best service and last price. Sinocean has become one global leading supplier of calcined bauxite.
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