Raw Material: Green Petroleum Coke, Green Needle Coke and High soft point pitch
We can provide hot-in and cold-out type high-pressure impregnation of once-baked graphite electrode products to reduce the porosity and increase the bulk density. The primary baked graphite electrode products are sent into the preheating furnace (350～400℃) by the electric flat car for preheating. Then the heated electrodes will send to the high-pressure impregnation tank (180℃) for high-pressure impregnation. After process is completed, cooling water is injected into the impregnation tank to cool the product.
Design pressure of impregnation system: 2.5MPa
Weight increasing rate: ≥16%
HP electrode, UHP electrode impregnation process. Special graphite and Isostatic graphite…
The production of UHP can be divided into materials processing, preparation of green electrodes, baking and rebaking, impregnation, graphitization, product packing.
Electrode preheating gas temperature is 350～400℃ and preheating for 10-12hours.
After impregnation processing, the graphite weight increasing rate: ≥16%.
Impregnation and baking process are between the kneading system and graphitization system.
High-pressure impregnation of once-baked graphite electrode products to reduce the porosity and increase the bulk density.
Working temperature of impregnation tank is about 180℃ and processing time is about 8-12 hours.
Impregnation system consists of preheating furnaces, high-pressure impregnation tanks and vacuum tanks., etc.
Our equipment with the main advantages as below
Adopt the flue gas circulation technology of the preheating furnace and the heat exchange technology of the combustion-supporting air to achieve a per ton unit consumption natural gas less than 25 M3.
Flue gas circulation in the preheating tank makes that product can be heated evenly.
Compared cold in and cold out type, hot in and cold out type gained technical & economical ground.
Temperature of impregnated product core is not higher than 50°C, and there is no pitch smoke after the product leaves the tank door.
The exhaust gas from each tank is collected and sent to tunnel kiln for incineration with zero emission of benzopyrene.
Automatically controlled valves and temperature, pressures makes the production more stable.
Prominer can provide the service work as below
Raw Material: Green Petroleum Coke, Green Needle Coke and High soft point pitch
Raw Ore: Sulfide Type Gold Ore Gold Grade: 3 g/t
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