What are the types of blast furnace carbon materials and how are they prepared?

1. Ordinary blast furnace charcoal block

The blast furnace carbon block with high quality anthracite (around 1250 ℃ calcination temperature degrees) as the main raw material, and adding a certain amount of metallurgical coke and graphite, molding green roasting temperature of 1200 ℃, calcined product according to the drawings provided by customers to use spear bed and machining planer, processed carbon block after pre-installed and strict inspection sent to the user.

2. Semi-graphite blast furnace carbon blocks

The blast furnace carbon block USES electric forging burn anthracite as the main raw material, add the right amount of graphite, and be broken, so carbon blocks mainly graphite material, its thermal conductivity and corrosion resistance is greatly increased.

3 graphite blocks

Graphite blocks in petroleum coke as raw materials, extrusion and after roasting after high temperature graphitization treatment. Build by laying bricks or stones in the bottom of the graphite blocks thermal conductivity than the ordinary carbon block with anthracite as raw materials is much higher.

Graphite per silicon carbide brick

This charcoal brick is used at the bottom of the furnace. The raw mass production method is in graphite carbon block formulated a certain quantity of silicon carbide, the purpose is to mention high thermal conductivity carbon block, and at the same time improve the carbon block strength and abrasion resistance.

5 microporous carbon blocks

In order to minimize the molten iron and slag erosion and penetration of carbon blocks, prolong the service life of blast furnace, blast furnace bottom and hearth to adopt microporous carbon block. The main material in the manufacture of the micro hole carbon blocks for electricity of anthracite or natural graphite and graphite, and add into the silicon metal, silicon carbide, or 3 oxidation 2 aluminium.

Hot - molded charcoal brick

This kind of carbon brick is mainly used in hearth and hearth. It is UCAR patented products in the United States. In the production of small heat moulding charcoal brick aggregate is electric coal smoke-free satin, and adding graphite, silica, silicon carbide and additives, etc. The purpose of join silicon dioxide is to improve the alkali resistance of carbon brick. Small heat moulding production process feature of carbon brick is moulded electric roasting at the same time, only 8 min about the carbon billet can be heated to 1000 ℃ , cancelled the traditional roasting process, short time pressure roasting has increased the density of carbon brick , improves the performance of thermal conductivity of carbon bricks.

7 Self baking charcoal blocks

The carbon block without roasting is sent to the user, after forming price is lower, used for laying of middle and small blast furnace or ore heat furnace. The build by laying bricks or stones after boiling inside use heat oven and run early calcined into monolithic lining.