ZHENGSHAN TECHNOLOGY

Pre-baked anode carbon block is a kind of carbon material used in the electrolytic aluminum industry, which has become a key component of the electrolytic cell due to its excellent electrical conductivity and high temperature corrosion resistance.This article will introduce the production process of pre-baked anode carbon block in detail and discuss its optimization strategy in order to provide a reference for the production practice of related enterprises.

1. The production process of pre-baked anode carbon block

The production process of pre-baked anode carbon block mainly includes steps such as raw material selection, processing, mixing, forming, roasting and cooling.

Raw material selection

The main raw materials of pre-baked anode carbon block include petroleum coke, bituminous coke, anthracite coal, anthracite treated with ash reduction, and raw materials for carbonization of fruit husks.These raw materials need to go through strict screening to ensure that their quality meets the production requirements.

Raw material treatment

Raw materials need to go through crushing, screening and other processing processes to meet the requirements of the production process for particle size distribution.At the same time, the raw materials need to be calcined to remove the volatile components and improve the purity of the raw materials.

mix

Mix the processed raw materials in a certain proportion to ensure that the components are evenly distributed.The mixing temperature and time need to be controlled during the mixing process to ensure the uniformity and stability of the mixture.

Molding

The mixed material is pressed through a molding machine to form a certain specification of anode carbon block.During the molding process, the molding temperature and pressure need to be controlled to ensure the density and strength of the anode carbon block.

Roasting

The formed anode carbon block is calcined to remove the volatile components, coking the asphalt, and improving the mechanical strength and electrical conductivity of the product.During the roasting process, the roasting temperature and heating rate need to be controlled to ensure the quality of the anode carbon block.

cooling

The anode carbon block after roasting needs to be cooled to ensure that it can remain stable during use.

2. The optimization strategy of the production process of pre-baked anode carbon block

Raw material optimization

By optimizing the ratio and selection of raw materials, the utilization rate of raw materials and product quality are improved.For example, choose petroleum coke with low ash content and volatile content, as well as coal asphalt with softening point, coking value and other indicators that meet the requirements.

Mixing process optimization

Optimize the production capacity of the kneading pot and the kneading process parameters, such as kneading temperature, time and equipment capacity, to improve the uniformity and stability of the mixture.At the same time, the mixing time is reduced and the production efficiency is improved by adjusting the formula.

Molding process optimization

Optimize the operating parameters of the forming machine, such as vibration frequency, amplitude and forming temperature, to improve the density and strength of the anode carbon block.At the same time, by improving the molding mold and process, the dimensional accuracy and surface quality of the anode carbon block are improved.

Roasting process optimization

Optimize the structure of the roasting furnace and the roasting process parameters, such as roasting temperature, heating rate and negative pressure control, to improve the quality and yield of anode carbon blocks.At the same time, by improving the roasting curve and combustion method, energy consumption and emissions are reduced.

Cooling process optimization

Optimize the cooling method and cooling time to ensure that the anode carbon block can remain stable during the cooling process.At the same time, through the improvement of cooling equipment and technology, the cooling efficiency and product quality are improved.

The production process of pre-baked anode carbon block is a complex and delicate process, and the process parameters and quality requirements of each link need to be strictly controlled.By optimizing key links such as raw material selection, mixing process, molding process, roasting process and cooling process, the quality and output of pre-baked anode carbon blocks can be significantly improved, and production costs and energy consumption can be reduced.At the same time, strengthening quality management and technological innovation in the production process is also the key to improving the competitiveness of pre-baked anode carbon blocks.