The carbon chromite iron used in the smelting of stainless steel is mainly produced by submerged arc furnaces. This process mainly uses block chromite ore as raw material, and the powder ore needs to be processed into blocks by pressing briquettes before use. The world's chromite ore resources are mainly in powder chromite ore (75% to 80%). At present, the utilization of powdered chromite ore mainly relies on methods such as sintering and pelletizing/briquetting, to block the powder ore and use it for submerged arc furnaces or vertical furnaces. At home and abroad, the treatment of fine ore generally adopts pelletizing and briquetting, using a simple pelletizing/briquetting process, which means that the fine ore is not finely ground and is directly pelletized/briquetted using a dedicated pelletizing machine or a briquetting machine/briquette machine. The pelletizing/briquetting process has low investment and cost.

After sieving the powdered chromite ore, a qualified particle size of chromite ore is mixed with a binder, and then an appropriate amount of water is added and stirred in the mixer. The mixed material is sent to the briquette machine to press the briquettes. After drying, the finished briquette can be put into the furnace for smelting. The basic process flow is: storage--- screening--- crushing--- mixing--- briquetting--- drying.

The selection of binders for powder chromium ore briquettes forming should choose binders with low content of harmful elements such as S and P and good bonding performance. After multiple experiments, our company suggests choosing bentonite and cement with low prices and non polluting chemical composition as binders for smelting alloys.

Due to the large proportion and particle size of powdered chromium ore, it poses certain difficulties for raw material mixing and briquetting. Our company has developed a specialized briquette machine equipment for chromium ore, which has a structure, performance, and material specifically used for powder chromium ore briquette pressing. On the basi s of the configuration of ordinary briquette press machine, the reducer model is increased, and a smaller width pressure roller is used. In this way, the total pressure of the device on the roller surface will increase, and the strength of the finished chromium ore briquette will be greatly improved. In addition, considering the specific gravity of chromium ore powder, the rollers must be wear-resistant and durable,its material selected is 9Cr2 forged steel, with a hardness of over 60HRC, which is very suitable for heavy mineral raw materials. After the formation of powdered chromium ore briquettes, the ore briquettes must meet the following requirements: drop strength (2.0m)>2 times per briquette; Compressive strength>5kg/briquette; Mineral briquette size: customized according to user requirements, generally ranging from 20-100mm; The requirement for impurity elements in ore briquettes is S ≤ 0.06% and P ≤ 0.05%.

Our company's chromium ore briquette pressing machine is currently used in countries such as Iran, Australia, India, etc. After multiple experiments and improvements, we have mastered mature chromium ore briquette pressing technology. Please feel free to contact our company for consultation. If you need chromium ore briquette machine and its technical guidance:
ZHENGZHOU ZHONGZHOU BRIQUETTE MACHINERY PLANT,
Tel:+86 15890078925 13783550028,
E-mail: zzbriquettemachine@dzzzg.cn
Website: www.zz-briquette-machine.com

Zhongzhou chrome ore briquette/briquetting machine is designed for chrome ore,iron powder, iron oxide, oxide coating, iron scale, iron ore concentrates,iron mud to make briquettes, high pressure, stable operation, high productivity, high degree of automation, production efficiency, low failure rate, convenient maintenance, so Zhongzhou chrome ore briquette/briquetting machine are welcomed by many domestic and foreign enterprises. welcome customers from all over the world come and visit our factory for cooperation. 

 Productive advantages

• Four rollers double pressure

  

  after the first pressurization, the materials between main and auxiliary rollers enter the place between two main rollers for a second pressurization, where the pressure will be twice of the type of two rollers.(the auxiliary roller pre-press the hemisphere on the amin roller to exhaust air, the hemisphere will be pressed again into briquettes fomation through two main rollers).

• GB standard hydraulic components

  

  manufaturing by Dezhou oil pump company, using embolism type pump equipped with storage device which can be operation of protection briquette machine when the hydraulic moment fluctuation, the oil cylinder adopts compound type and be made of standard material 27SiMn, extremely good finish, wear resistance, having protective effect on seals.

• Roller taper assembly techology(patent)

  

  Roller and wheel hub of briquette machine is processed into tamper structure, which shall be compacted firmly by bolts for stability and reliance, easy to replace roller,save time and efforts for users.

• 9Cr2 forging rollers

  

  the roller materials adpot 9Cr2 forging steel, high precision and abrasion resisitant, the rigidity reach to 55-60HR through prempering.

• National standard bearing

  

  Using the rolling mill bearing series, each model is the double row cylindrical ball bearing, well-known brands, lagre load bearing, stable performance, guarantee period of 5 years.

• Split plummer block

  

  Unique split type design, precision machining, simply remove the bolts when the user maintenance, open housing, can be seen bearing, ease of maintenance.

• Steel reducer

  

  Independent production, full steel material bell housing, gears made of 40Cr steel, stable performance.

• Spindle material

  

  high quality finished No.45 steel tempering.

 Case

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