How to Choose High-Density, Low-Porosity Silica Bricks According to Your Needs: A Procurement Decision Guide

In the evolving landscape of the coke industry, the requirements for refractory materials in coke ovens have become increasingly stringent. This has spurred the development of high-density, low-porosity silica bricks, which offer a range of benefits that can significantly enhance the performance of coke ovens.

Market Background and Product R&D Necessity

As the coke industry advances, coke ovens are subjected to more extreme conditions, demanding higher-quality refractory materials. High-density, low-porosity silica bricks have been developed to meet these escalating requirements. The need for such advanced products is evident in the growing demand for increased efficiency, longer service life, and better thermal performance in coke ovens.

Outstanding Performance and Advantages over Ordinary Silica Bricks

High-density, low-porosity silica bricks possess several remarkable properties. Firstly, their high density contributes to excellent mechanical strength. With a density typically around 1.9 - 2.0 g/cm³, compared to the 1.7 - 1.8 g/cm³ of ordinary silica bricks, they can withstand greater pressure. This high density also leads to high thermal conductivity, usually reaching 1.5 - 1.8 W/(m·K), while ordinary silica bricks may only achieve 1.0 - 1.2 W/(m·K). Additionally, they have superior high-temperature compressive strength, able to endure up to 50 - 60 MPa at high temperatures, far exceeding the 30 - 40 MPa of ordinary silica bricks.

Positive Impact on Coke Ovens

Improving the density of silica bricks brings numerous benefits to coke ovens. For example, in a large-scale coke plant, after replacing ordinary silica bricks with high-density, low-porosity silica bricks, the thermal efficiency of the coke oven increased by approximately 15%. This led to a reduction in the coking time by about 20%, from an average of 20 hours to 16 hours. Moreover, the service life of the coke oven was extended by about 3 - 5 years, significantly reducing maintenance costs and downtime.

Strict Standards for Porosity and Density

To ensure the quality and performance of high-density, low-porosity silica bricks, strict standards for porosity and density are set. The porosity of these bricks should generally be below 18%, compared to the 22 - 25% of ordinary silica bricks. This low porosity helps to prevent the penetration of corrosive substances and gases, further enhancing the durability of the bricks.

Judgment Methods and Suggestions for Customers

For customers in the coke oven-related industries, here are some ways to determine if the product meets your needs. Firstly, check the product specifications provided by the manufacturer, including density, porosity, thermal conductivity, and high-temperature compressive strength. Secondly, ask for case studies or references from other customers who have used the product. Additionally, consider the reputation and experience of the manufacturer. A reliable manufacturer with a long history of producing high-quality refractory materials is more likely to provide products that meet your requirements.

In conclusion, high-density, low-porosity silica bricks are an ideal choice for coke ovens, offering high quality, reliability, and significant practical benefits. They can effectively meet the special requirements of coke ovens for refractory materials. If you are looking for a refractory solution that can improve the efficiency and service life of your coke oven, don't hesitate to contact us for more information and make a wise procurement decision.