Dolomite Bricks chemical composition :The effect of chemical composition of artificial slag to prevent the corrosion of magnesite-carbon refractory Magnesite-carbon refractory brick has attracted a lot of attention in the steel industry due to its special characteristics in slow melting and non-wetting with steel melt. In addition to its good advantages, carbon magnesite refractories cause corrosion of the garden with slag and reduce the life of the refractories. In this research, the effect of different additives to the slag of Patili furnace in order to prevent and minimize the corrosion of refractory carbon magnesite has been considered. The results show that by mixing materials such as baked dolomite mineral, worn carbon magnesite brick powder (waste), sintered magnesium oxide in different proportions of 15% and 30% of each with slag, the refractory life increases and the best results It reduces corrosion and increases resistance Dolomite or dolomitic limestone with the chemical formula CaMg(CO2)3. Carbonate minerals include calcite, aragonite, dolomites. Perhaps no other mineral is used as much as limestone and dolomite. Due to their physical properties, carbonate rocks form the basic foundations of the construction materials industry Application of dolomite: Melting of metals (ferrous and non-ferrous) Agriculture (as fertilizer and soil regulator) Preparation of manganese from sea water Refractory industries (clay bricks, cement making, etc.) Glasswork Construction industries (tiling, shafting, etc.) Tire filler Varnishing coloring ceramic Dolomite mineral with the chemical formula CaMg(CO3)2 is completely exposed in three directions. Most dolomites are found in cream-gray and gray-white colors, but some have been seen in other colors such as white, yellow, green, and black. This mineral has a specific weight of 6.2 grams per cubic centimeter, its hardness is 3.5-4 and it has a glassy or pearly luster. The constituent elements of dolomite are mainly magnesium oxide (MgO) and lime (CaO), but other elements such as iron, sodium and potassium oxides may also be found in their structure. Dolomite is found in massive layers with thicknesses of tens of feet. Dolomite is known as one of the common components of sedimentary rocks. 
dolomite bricks manufacturing process
The rocks containing dolomite are known by the same name as dolomite or dolomite limestone. Carbonate minerals include calcite, aragonite, dolomite. Perhaps no other mineral has the uses that limestone and dolomite have. Due to their physical properties, carbonate stones form the basic foundations of the construction materials industry and have been used since the beginning of human civilization, and currently the use of these stones is increasing. Carbonate rocks comprise 50% of the world's oil and gas reservoirs and 95% of Iran's oil and gas reservoirs. Carbonate sediments are composed of calcite (low or high magnesium) or aragonite and some dolomite, pyrite and quartz. PARSSILIS PARSSILIS Phone: 08133342298 Contents Dolomite powder Pars Silis sells granulated dolomite. Product specifications: granulated, micronized. Mine in operation with exploitation license. Minimum amount of income: according to the customer's needs. Amount that can be withdrawn daily: according to the customer's needs. The mineral surface - open-pit - massive M percentage above 20/20 can be estimated and is ready for actual purchase, including industries (artificial stone, iron smelting, steelmaking, glass, etc.). Uses of dolomite Dolomite is generally used as follows: 1- In construction: In building construction, it can be used as a building stone in foundations or in some cases when it is crystallized for decorative and facade stones. Of course, this application is the minimum use of this mineral because its other applications are more important and have more added value. In Iran, dolomite from Kermanshah and Kurdistan is mostly used in construction due to lack of relevant technology or industry in the region. 2- In tile and ceramic, glass and refractory brick industries: In the glass industry, dolomite is used as a melting aid. The dolomite used in this industry must have a minimum percentage of colored oxides such as ohm, titanium, manganese, etc., which is usually added in the construction of the tile body about 10 to 15 percent of dolomite. In Iran, dolomite has been used the most in glass and tile industries. 3- Silicothermic magnesium recovery process (Pidgeon Process) from dolomite rock. 
magnesia dolomite bricks
Dolomite is a type of carbonate mineral which is a combination of calcium, magnesium and carbonate and has various applications in the production of cement, magnesium oxide, oil and gas drilling, etc. Pars Shimi is the largest producer of calcareous dolomite and in various types. It is possible to produce and supply this widely used product for use in different industries with different meshes. Magdol-carbon bricks are used in casting pots, which are a good alternative to magnesite-carbon bricks, and as it was said, one of the most important advantages of this brick is its cheapness and the abundance of raw materials, which is dolomite, in the country, hence the costs It reduces to some extent for the steel industry. In factories where the steel composition is silicon-kiled (si-kiled0), the life and performance of magdol-carbon bricks against molten materials is better than magnesite-carbon bricks, and due to the high quality of this product, large steels such as Mobarakeh steel, Khuzestan steel and Chandin steel Major parts of the country use magdol-carbon bricks Magnesium bricks are used in iron and steel industries as lining protection in Siemens-Martin furnaces and electric arc furnaces. These bricks are also used as lining for non-metallic industry furnaces such as tunnel, rotary and vertical furnaces. This brick is also used in glass melting furnaces and non-ferrous metal industry furnaces (such as copper, lead, zinc, equipment and nickel). 
Magnesite bricks have high hot strength and very good chemical resistance against alkaline materials (including steel slag). But these bricks have a high coefficient of thermal expansion and as a result low shock resistance, which has limited the use of these bricks. Also, these bricks can be hydrated at a temperature above 40 to 20 degrees Celsius under air pressure, which leads to defects in the brick. This made the storage, transportation and installation of this batch of bricks. Magnesite brick or magnesia brick is one of the types of refractory brick that has alkaline properties. The raw materials used to produce alkaline bricks are magnesite and magnesium chloride. Magnesite is found in the form of crystals in nature. The chemical formula of magnesite is MgCO3. Magnesite bricks have high hot strength and very good chemical resistance against alkaline materials (including steel slag). Magnesite bricks are used in iron and steel industries as liner protections in Siemens-Martin furnaces and electric arc furnaces. These bricks are also used as lining of non-metallic industry furnaces such as tunnel, rotary and vertical furnaces.