Petroleum coke is a product transformed by distillation of crude oil after the separation of light and heavy oil, and then the process of hot cracking of heavy oil. From the appearance, coke is a black block (or particle) with irregular shape and different sizes and metallic luster. The particles of coke have a multi-pore structure, and the main element composition is carbon, accounting for more than 80% and containing hydrogen 1.5-8%. The rest are oxygen, nitrogen, sulfur and metal elements.
Application Areas of Petroleum Coke
Petroleum coke, depending on its quality, is used in graphite production, smelting and chemical industry.
1.Low-sulfur, high-quality cooked coke such as needle coke, mainly used in the manufacture of ultra-high power graphite electrodes and some special carbon products; Needle coke is an important material for developing new technology of electric furnace steelmaking in steelmaking industry.
2.Medium sulfur, common cooked coke, used in aluminum smelting.
3.High sulfur, ordinary coke, is used for chemical production, such as the manufacture of calcium carbide, silicon carbide, etc., but also as a fuel for metal casting.Petroleum coke as a fuel can replace heavy oil, is a good way for new energy applications, can also be used in graphite, smelting, chemical and other industries. The largest application area of petroleum coke in the world is the cement industry, followed by the calcination of petroleum coke to produce pre-baked anodes for aluminum smelting or graphite electrodes for steelmaking. With the vigorous development of construction, the petroleum coke industry has also grown rapidly.
Petroleum coke powder process
The grinding process of petroleum coke needs to consider the particle size of the masterbatch, and again consider the performance of the equipment, output, etc., and whether there are special quality requirements. Petroleum coke powder is generally divided into four types: coarse powder processing (0~3mm), fine powder processing (20-400 mesh, ultra-fine powder processing (400~1250 mesh) and micro-powder processing (1250 mesh ~3250 mesh). Common petroleum coke grinding production line equipment configuration: raw material bin, bucket elevator, jaw crusher, Raymond mill, electromagnetic vibration feeder, analysis machine, powder collector, pipeline device, dust collector, power distribution cabinet, finished product bin and so on.
The specific process flow is as follows:
The first stage: the bulk petroleum coke is broken by the crusher to the fineness of the feed that can enter the mill (15mm-50mm).
The second stage: the small pieces of petroleum coke after grinding are sent to the silo by the elevator, and then the vibration feeder sends it into the grinding room of the grinding machine for uniform and quantitative grinding. YMG Raymond mill can be used for fine powder processing Ultrafine powder processing can choose CLUM ultrafine vertical mill and HGM ultrafine mill.
The third stage: the petroleum coke powder after grading is graded by the classifier, and the unqualified powder is graded by the classifier and returned to the main machine of the mill for re-grinding.
The fourth stage: the petroleum coke powder with the fineness of the powder is separated and collected through the pipeline into the dust collector, and the collected finished powder is sent to the finished product silo through the discharge port by the conveying device, and then the powder filling tank truck or automatic baler is used for packaging.
Mill recommendation
YGM Raymond Mill
Raymond mill is suitable for pulverizing in mineral, chemical, construction and other industries. Raymond mill is suitable for grinding all kinds of materials with Mohs hardness below 9.3, such as calcium carbonate, barite, dolomite, calcite, limestone, kaolin, bentonite, marble, gypsum, quartz, feldspar, clay, talc, fluorite, clay, white mud, mica, refractory, glass, etc., a total of about 1000 kinds of materials. The output per hour is 0.2~50t, the maximum inlet diameter is 35mm, the fineness of the discharge is 80~325 mesh, and can be adjusted at will.
HGM Ultrafine Grinding Mill
Ultrafine mill is also suitable for most of the material powder processing, and ultrafine mill compared with other mills, the output is 40% higher, and the material can be processed to 325~3000 mesh, the fineness of the finished powder can be adjusted at any time. The key transmission parts of the ultrafine mill are made of high-quality cast materials, which are more wear-resistant and have a utilization rate of up to 2 to 5 years. And the mill adopts a closed system, green environmental protection.
CLUM Ultrafine Vertical Mill
The ultra-fine vertical mill is suitable for high-capacity production, widely used for grinding non-flammable and non-explosive materials below 7 (Mohs hardness), such as quartz, feldspar, calcite, talc, barite, fluorite, iron ore, copper ore quartz, especially suitable for slag, cement clinker, zircon sand, fly ash and silicon carbide, coal and so on. The maximum feeding size is 30mm, the production capacity is 0.2~45t/h, and the fineness of the finished product is 320~3000 mesh. The ultra-fine vertical mill not only consumes low energy, the grinding parts are consumed full, and the comprehensive benefit is high, but also the PLC intelligent control system is configured inside, which can realize automation.
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