Using requirements of boiler with refractory material

     Boiler burner band main properties of refractory material should have included slag resistance, high strength, wear resistance, thermal stability, thermal conductivity and other properties. The traditional refractory belt mainly used chrome refractory ramming material, but because of the domestic high quality chrome resource scarcity, therefore is the main use of silicon carbide ramming material, silicon carbide high alumina coating material, high aluminum phosphate can be plastic, high temperature expansion plastic.

Of which the first two kinds of materials of high prices, but the long service life, good performance, and then two kinds of material price is low, but performance in general, and short service life. Therefore in the cyclone furnace liquid slag furnace and should not be used in high phosphate refractory plastic or ramming material, to avoid peeling or cracks in use in the production, so as to enhance the slag resistance of material and reduce the repair frequency.

High-temperature micro expansion refractory plastic and super 3000 water clay refractory performance fairly, has shown some advantages in the application to the wall pipe and boiler furnace top. But this kind of material in its solidification time is long, easy to dry shrinkage crack, thus for the construction and maintenance of a great deal of trouble. At the same time the supplier quality there is a certain fluctuation, sometimes refractoriness and normal temperature strength of less than 1580 degrees and 981N/cm2.

Carburant,Refractory Material,Refractory Product,Refractory Company,Refractory Mortar

Carburant

• Name: Carburant
• Products Id: a69
• Advantage: Less impurity content, recovery carbon stable with obvious effects, fixed C can be more than 93%
• Delivery Time: 30-60 Days
• Products Used:

Low Creep Mullite Brick,Creep Brick,Mullite Brick,Firebrick,Fire Brick,Refractory Brick

Low Creep Mullite Brick

Composed of compound mullite, the bricks are processed through moulding under high pressure and sintering at high temperature, with Features of strong strength, steady bulk at high temperature and small creep rate, which are available for hot blast stove of large and middle size.
 

Ladle Slide Gate,Tundish Slide Gate,Lade Sliding Gate,Slide Gate Plate

Ladle Slide Gate

Made by using sintered alumina and mullite as raw material, add in some of the carbon matrix components and anti-oxidant(such as aluminum, silicon metal, SiC, B4C, Mg-B and so on), adding binder pitch or phenolic resin mixed with coal Nerishige type, fired in a reducing atmosphere to form alumina oxide carbon refractories sliding gate plate.Slide plates fired at high temperatures cover Al2O3-C based, Al2O3-ZrO2-C based and MgO-spinel based, Our company supports the customer in flow control offering a range of ladle slide gate products. We have a wide range of refractory materials for achieving consistent and reliable high performance in all areas of slide gate applications. Balanced refractory life of plates, nozzles and well blocks enables a cost-effective operation 

Selection of additives in firebrick

     Resin bonded carbon magnetite brick because of its good thermal shock resistance and slag resistance of iron and steel industry, in particular applied basic oxygen furnace and electric arc furnace. Carbon has excellent performance such as high thermal conductivity, low thermal expansion coefficient, high heat shock stability, at the same time and wettability of the job of slag has good corrosion resistance and anti erosion ability. As is known to all, the brick body carbon easy oxidation, which restrict its use in high temperature, the oxidation of carbon from the beginning of the 300 DEG C, with the increase of temperature oxidation speed.

    Ceramic materials (SiC, carbon silicon oxide) do coating in the flake graphite or carbon fiber, were impregnated with phosphate, cement foam board price and the use of surface glaze etc... These expensive methods used in the refractory brick have certain limitations, another method is through the steam treatment of fine particle boron, TiB2, ZrB2 and SiC and other materials to do thermal barrier coating on graphite or carbon composite material.

   A common method of refractory brick is to add fine-grained antioxidant materials, such as in MgO C SiC, B4C, brick added metal Al, Mg and (or) Si to prevent or limit carbon at high temperatures (> 1400 C) oxidation. Also, these additives are expensive, and can not completely prevent the oxidation of carbon at low temperature. Coating solution by liquid mixing 60% solid and 40% made, wherein the liquid binder is phosphoric acid and ethanol (liquid solution 30%) mixture. The outer coating brush MgO C brick thickness is about 0.8mm, the sample coating drying at room temperature is about 10min. In practice, the ladle after 5h pre heated to 1200 DEG C, because of some difficulties in the process of steel-making and sometimes need a longer time.

Metering nozzle,Nozzle Refractory,Ladle Nozzle,Tundish Nozzle,Lower Nozzle,Upper Nozzle

Metering nozzle

The Zr metering nozzle manufactured by this company is specially used for the tundish gating system without plug stick in the small square-base continuous casting machine, and it is more suitable for multi-thread and small square-base continuous casting machine. All nozzles adopt special-type and high-quality refined raw materials with reasonable structure and strong erosion resistance. In the entire course of pouring, there is little change in diameter of the nozzle with stable speed. Nozzles of the mosaic type, combined type and entire difference type can also be provided as required by customers.

Low Creep Mullite Brick,Low Creep Brick,Mullite Brick,Brick Block,Creep Firebrick

Low Creep Mullite Brick

Composed of compound mullite, the bricks are processed through moulding under high pressure and sintering at high temperature, with Features of strong strength, steady bulk at high temperature and small creep rate, which are available for hot blast stove of large and middle size.
 

Calcium Silicate Board,Calcium Silicate Product,Calcium Silicate Products,Calcium Silicate Blanket

Calcium Silicate Board

calcium silicate board is used in industries including steel plants, cement clinker kiln, heat and power stations, foundries both ferrous and non-ferrous, cement producers, Aleris , ceramics, coke plants, incinerators, renewable energy, chemical works, sugar refineries and petrochemical industry. It is sell well in the world and we won a lot of trust both at home and abroad . 

Submerged Entry Nozzle,Nozzle Refractory,Refractories Nozzle,Ladle Nozzle,Tundish Nozzle

Submerged Entry Nozzle

Based on functions, the submerged entry nozzles manufactured by our company are classified into plug-in type, hanging type and fast renewal type; and based on material quality, nozzles mainly classified into aluminum carbon, zirconium carbon and magnesia carbon. This product enjoys performances of purifying liquid steel, prevent liquid steel oxidation, with good liquid steel washing resistance and erosion resistance. 

Assembled Bricks For Blast Tuyere,Refractory Brick,FIrebrick,FIre Brick,Refractory Firebrick,Alumina Brick

Assembled Bricks For Blast Tuyere

Advantages:

Good abrasion resistance, good thermal shock stability, high temperature strength, good erosion resistance.

Application:

It is widely used in Blast furnace tuyere, the circumference of the tube outlet, mixed air entrance, flue gas pipeline, turning tube etc..

 

Low Creep High Alumina Brick,High Alumina Brick,Low Creep Brick,FIrebrick,Refractory Brick

Low Creep High Alumina Brick

Mainly composed of special level bauxite chamotte as starting material and assisted with special additives, the brick are processed by moulding under high pressure and sintering under high temperature, with features like large heat accumulating capacity and small creep rate. They are avail able for blast hot stove matched of middle and small blast furnace.  

Refractory material how to use can have anti damage ability

     How to use Refractory let it has anti damage ability? The development of matching with refractory material according to the clinker rotary kiln each work with the different mining conditions, in a targeted manner to configure different anti damage of refractory materials, and considering the basic matching problem of each work tape lining service life, reduce maintenance times to stop the kiln, each work with lining, reach namely damage resistance independent and phase the purpose of matching cycle. Lining material preheating zone selection of good chemical stability, alkali erosion leaf wax stone brick and strong, the high siliceous raw pyrophyllite with low alkali, alkali resistant bricks made of this raw material, whether or not to burn the Chengdu firing with alkali resistance strong, but the strength is high, nearly doubled than clay brick life.

       The completion of the industrial experiment stage in Krivoy Rog coking plants, coke oven masonry and recommended room three thermal repair methods: flame gunning; using oxygen to the ceramic welding; using the exothermic material (heating material) to repair. The process principle of common: with the help of heat generated to form a protective layer on the surface of refractory composite masonry mending surface.

Flame gunning method of flame gunning refractory products, powder particles melt in the liquid or gaseous fuel flame, and was sent to the surface to be repaired. At this point the masonry was nozzle flame supplementary heating, so using this method may not have special restrictions on temperature is put forward in this paper, and can adopt refractory powder cheaper to obtain high-quality gunning layer. Principle of ceramic welding method is adding to the material of strong oxidant (exothermic material) - aluminum and silicon. Wind transport by means of oxygen jet flame method, oxidant and refractory powder to the surface to be repaired.