Taphole Mass / Tap-hole clay / mudgun mass is a refractory material used to seal the taphole. It can be divided into two categories: hydrous taphole clay and anhydrous taphole clay. The former is used in small and medium-sized blast furnaces with low top pressure and low intensified smelting, and the latter It is used in large and medium-sized blast furnaces with high top pressure and high degree of intensified smelting. Among them, Taphole clay uses clay powder, clay refractory brick crushing particles, and coke powder as the main raw materials, and appropriately adds asphalt, high alumina bauxite, silicon carbide, etc., and uses water as a binding agent. Commonly used waterless Taphole clay raw materials are generally corundum, high alumina bauxite, silicon carbide, clay and coke powder.
In order to improve the performance of taphole clay and increase its strength and corrosion resistance, raw materials such as metallic silicon, metallic aluminum, sericite powder, and ferrosilicon nitride have been used. The addition of various fine powder and ultrafine powder raw materials has further increased its density and sintering performance. Waterless Taphole clay usually uses tar, dianthracene oil, and resin as binders.

Classification of Low consumption rate tap-hole clay:
Taphole clay can be divided into two types: water taphole clay (hydrous taphole clay) and water free taphole clay (anhydrous taphole clay, resin bonded tap hole clay).
Water as a binder is called taphole clay with water, and organic materials such as tar and resin as a binder are called water free Taphole clay.
The main components of Taphole clay with water are: refractory clay, refractory, coke foam, pitch, and water. Mainly used in small blast furnaces (below 150 cubic meters).
The main components of water free Taphole clay are: coke foam, refractory clay powder, pitch, high alumina bauxite or brown corundum, silicon carbide, sericite, dehydrated anthracene oil.
The capacity of the blast furnace is different, and the ratio when in use is not the same, and the composition is also changed.

Specifications for low constumpation rate tap-hole clay:
The raw material ratio of water free taphole clay(anhydrous taphole clay, resin bonded tap hole clay)
Basic aggregate: 40-60% (AL2O3 quartz sand, etc.)
Additional aggregate: 0-15%
Scorch chips: 15-35%
Organic binder: 15-35%
Shrinkage after drying: none
After sintering at 1500ºC: Basic expansion

The raw material composition ratio of water taphole clay(hydrous taphole clay)
Basic aggregate: 45-75% (clay, brick chips)
Scorch chips: 10-25%
Water: 13-17%
Shrinkage after drying: 2-4%
After sintering at 1500ºC: basic shrinkage

Service is what we know. Providing innovative variety of refractory materials, products and engineering is what we strive for. Backed by over years of experience of manufacturing, marketing and distributing premium refractory products and solutions worldwide, we're committed to providing a range of high quality, innovative, cost-effective tabular alumina, blast furnace slag, refining slag, taphole clay, well block, tapping hole block and nozzle brick.
The company's corporate headquarters is currently located in the Zhengzhou in central part of China. Possessing sophisticated production lines and inspection equipments, providing diverse lines of refractory products backed by expert R&D technical support, we develop closer customer relationships and taking on a larger role in the total supply and manufacturing chain.
Our products have been exported to Europe, Asia, Africa, South America and Middle Eastern countries, which enjoys good reputation. 
 

Raw material formula and ingredients of Blast furnace taphole mass taphole clay
Taphole clay composition can be divided into two parts-refractory aggregate and binder.
Refractory aggregates refer to refractory raw materials such as corundum, mullite, and coke gemstones, and modified materials such as coke and mica.
The binding agent is organic materials such as water or tar pitch and phenolic resin, and is also mixed with SiC, Si3N4, expansion agents and additives.
The aggregate forms a matrix according to a certain particle size and weight, and it has a certain degree of plasticity under the adjustment of the binder, so that the molten iron can be blocked by the taphole clay.

Bontrue has a group of experts in the field of servicing refractory engineering. All of our technicians are trained engineers that have worked in tabular alumina, blast furnace slag, refining slag, taphole clay, well block, tapping hole block and nozzle brick manufacturers in the past. We know variety of refractory materials, and foundry applications throughout China and the world. Our experienced engineers offer an all-round support to the customers for taking our refractory products into operation. They analyze the customers' actual application requirement in order to achieve an optimal performance of the refractory engineering. Beyond the standard procedure of selling products, such as signing contracts, providing third-party testing and regular after-sales service, we support customer in many ways. This includes signing warranty agreement, ensuring the product using effect, identifying a problem before it happens and solving the problem to relieve customers of worries

1. Are you a manufacturer of trader?
- We are a manufacturer in China with 5 years production experience.
2. Which areas have you exported to?
- We have exported to Indonesia, Italy, Spain, Vietnam, Brazil, Russia and so on.
3. What's your production capacity?
- Our production capacity for taphole clay is around 200, 000 tons per year.
4. Do you have stock in warehouse?
- Yes, we ususally have enough taphole clay in our warehouse with different specifications. So that we can give a quick delivery time.

Please be free to contact us if any enquiry for low consumption rate tap-hole clay