Ferronickel is exclusively used for the smelting of sealed and paste laterite ore

Crushing and screening

Laterite ore has low nickel content and uneven lumpiness. The particle size is finer, and there are also large blocks with a particle size of more than 100 millimeters. It is necessary to consider the installation of cone, jaw crusher or counter-roll crusher and screening equipment, so that the high-standard closed paste electric furnace ore and other charge can meet the technical requirements of use.

Pre-drying

Laterite ore imported from Indonesia and the Philippines usually contains 32-40% moisture. About 20% of the physical water should be dried at 120°C for 2 hours to remove. Use closed paste submerged arc furnace, hot blast stove, rotary furnace hot flue gas to dry laterite, blast furnace or closed submerged arc furnace gas or to strengthen production equipment (7-8% crystalline water, decomposed and removed at 400℃, after half an hour.)

Block

The powdered red clay is sintered, pelletized, and briquetted into the electrode paste submerged arc furnace, which can improve the air permeability of the closed paste charge and reduce the ringing failure during the charge reduction of the rotary furnace. In order to avoid excessively high water content of the sintering material, it is improper to use excessive lime (instead of limestone) to absorb the excess water of the sintering material. Because excessive lime is added, the ventilating conditions of the sinter material will be deteriorated; and more anthracite is required to burn exothermic heat to decompose calcium hydroxide; to remove water. It is better to use electrode paste submerged arc furnace hot flue gas and anthracite to burn and dry laterite ore economically.

Contact info:

Email: carbongraphiteproduct@gmail.com

whatsapp: +8614738833543


Henan Rongxin Carbon Group

　　Rongxing Group is China’s leading supplier dedicated to providing its customers with the quick quotes, superior quality products, competitive prices and fastest possible deliveries of carbon metallurgical materials and solutions.

　　Its main products are graphite electrode，electrode paste, calcined petroleum coke, and refractory. The range of product line covers carbon materials, graphite materials, refractory and water treatment materials. The annual production capacity of graphite electrode, electrode paste, calcined coke and refractory reaches 50,000 tons, 200,000 tons, 250,000 tons and 20,000 tons respectively. The company’s corporate headquarters is currently located in the Zhengzhou.

　　As an experienced supplier, we now offer everything from RP, HP to UHP graphite electrode and trapezodial, oval, cylinder electrode paste in the world. Our products meet and exceed the challenges of thousands of applications, and continue to be innovated.


Alibaba ：Graphite electrode

Alibaba ：Electrode paste

Comments

Post a Comment

Popular posts from this blog

Study on impurities in high purity flake graphite

Image
 　　For the analysis of trace impurities in high-purity flake graphite, the sample is usually pre ashed or wet digested to remove carbon, the ash is dissolved with acid, and then the impurity content in the solution is determined. The ashing method does not need to use ultra pure acid to dissolve the ash, thus avoiding the risk of introducing the elements to be measured, so it is used more. It is also very difficult to detect the ash content of high-purity flake graphite, because the enriched ash needs to be burned at high temperature, and it is difficult to separate the ash from the sample boat at high temperature, which makes it impossible to accurately determine the composition and content of impurities. 　　The existing methods all take advantage of the characteristic that the platinum crucible does not react with acid, use the platinum crucible to burn the high-purity flake graphite to enrich ash, and then directly heat the sample in the crucible with acid to dissolve th
Read more

General technical index requirements for electrode paste

Image
 Electrode occupies an important position in submerged arc furnace. The working conditions of the electrode are bad, the current passing through is high, the temperature difference between the two ends is large, and the production is affected by the impact of mechanical, electrical and charge collapse... Mechanical strength, higher electrical resistivity, better thermal shock resistance, oxidation resistance and smaller thermal expansion coefficient. Generally speaking, the quality of electrode paste is controlled by the following five indicators: 1. Ash: Ash is the residue of electrode paste when it is burnt to constant weight at 850℃-870℃. It belongs to inorganic minerals. It has high ash resistivity, poor strength, high power consumption, and large electrode consumption. In the event of a hard breaking accident, the ash content is a very important indicator, and the lower the better. 2. Volatile matter: Volatile matter refers to the mass loss of electrode paste under the condition o
Read more

Performance characteristics of anthracite electrode paste

 Anthracite is the main raw material of electrode paste. The performance of anthracite is related to the performance of electrode paste. Therefore, it is necessary to understand and discuss the performance of anthracite to ensure the quality of electrode paste. Anthracite coal in China is mainly distributed in Shanxi, Ningxia and Guizhou. Shanxi is the origin of anthracite, which is mainly produced in Yangquan and Jincheng. Anthracite is an indispensable raw material for carbon industry. It is mainly used in semi graphite cathode carbon block, electric furnace carbon block, blast furnace carbon block, carbon electrode and various pastes. Studying and discussing various properties of anthracite is very beneficial to improve the quality of carbon products.
Read more