According to all its raw materials, proportion, use, etc., the price of refractory castables varies greatly. And because refractory castables are mostly customized products, most of them are non-standard products, leading to the reference price on the market is not accurate enough. Therefore, the price of refractory castables is constantly changing. Combined with our own production situation, from the aspect of castable production process and raw materials, kerui briefly share with you the factors that affect the price of refractory castable.
Production process is the basis of castable price
Refractory ramming, refractory spray coating, refractory repair and refractory coating and other materials, its production and refractory castable is basically the same. The production process of refractory castable:
According to the production scale, raw material varieties and their characteristics and other factors, choose the main equipment:
Jaw crusher has three types, its specifications are expressed by the size of the feed port, mainly 250mm×400mm and 600mm×400mm, etc., the production capacity is 5-20t/h. Used for coarse crushing of bulk materials.
Crushing refers to the medium crushing and fine crushing of refractory raw materials after coarse crushing, but also the preparation of granular material. Its equipment for cone crusher, roll crusher (referred to as roll machine) and dry grinding machine.
Screening, the crushed material is divided into different particle size particles according to the particle size. Its equipment has fixed oblique screen and electromagnetic vibrating screen. The former screening efficiency of about 70%, the latter is generally more than 90%.
Fine grinding refers to the preparation of refractory powder. Its equipment includes ball mill, tube mill (also known as drum mill) and vibration mill.
Pre-mixing refers to the addition, admixture, binder and fine powder all powder or a few powder family pre-mixing, so it is called pre-mixing powder. Its equipment for the double helix conical mixer.
Batching scales generally use electronic, accurate weighing; The mixer is forced mixer, and the mixing material can be foiled into the separator and then packaged (equipped with electronic balance), or it can be packaged into bags directly from the outlet of the mixer. In addition, there are vertical elevator, belt conveyor and batching car and other equipment.
Generally speaking, the automation and advanced degree of refractory material plant selection equipment will affect the performance of the final product of castable, but also conducive to the stable output of castable. Zhengzhou Kerui Material has the industry's advanced automatic production line, annual output of amorphous refractory more than 100,000 tons.
Raw materials, admixtures and their proportions directly affect the price of castable
The final price of castable is directly affected by the price and preparation of refractory material, powder material and soft clay. And because the refractory bone critical particle size is large, grading, so the need for screening, lifting and other equipment, storage bin is also more. At the same time, the preparation of pre-mixed powder, these special processes also affect the price.
Chemical analysis and physical property inspection shall be carried out for refractory raw materials, cement binder and extrinsic materials before the addition of refractory castables. Chemical analysis, screening and fineness inspection should be carried out for refractory aggregate after breaking and grinding and refractory powder after fine grinding.
In the production of refractory flexible injection, pre-mixed powder must be used. Otherwise, trace admixture, ultrafine powder and fiber and other extrinsic material, difficult to mix, cause its performance instability, affect the construction and use.
For refractory castable products, the mass of heavy material per bag is generally 30-50kg, and that of light material per bag is 20-30kg, with an error of ±0.2kg.
After-sale castable support is also important
In the production of refractory castables, cement or liquid binder, can be packaged or shipped directly to the user, but must indicate its shelf life and dosage; Clay binding and low cement series and other refractory castables, the cement is also divided. If the cement is out of date, easy to replace. If it is used within the 3-month storage period, it should also be mixed.
The production mix of refractory castables, whenever its raw materials and production technology and other factors have changed, must be tested to meet the technical requirements before production. The mix ratio of new varieties of refractory castables should also be retested. In the production of refractory castables, the grain gradation should be checked, if not meet the technical requirements, should be adjusted in time; Each batch of refractory castable products, according to the technical requirements, performance measurement, and quality policy and construction technical requirements, a concurrent to the user.
Finally, the purchase of castables, should pay attention to the product performance and after-sales construction. The high and low castable price must have its characteristics.