激光粒度仪在耐火材料（轻烧镁球、轻烧镁粉等）生产中的应用作用

  http://www.ykbhlm.com耐火材料（轻烧镁球、轻烧镁粉等）是一类耐火度不低于1580℃的无机非金属材料。广泛应用于钢铁、有色金属、玻璃、水泥、陶瓷、石化、机械、锅炉、轻工、电力、军工等国民经济的各个领域，是保证上述产业生产运行和技术发展必不可少的基本材料，在高温工业生产发展中起着不可替代的重要作用。

　　自2001年以来，在钢铁、有色、石化、建材等高温工业高速发展的强力拉动下，我国耐火材料行业保持着良好的增长态势，已成为世界耐火材料的生产和出口大国。2011年中国耐火材料产量约占全球的65%，产销量稳居世界耐火材料第一。

　　据统计，2001-2010年耐火原料及制品产量稳步增长，其中“十五"末约为2001年的2倍;2010年全国耐火制品产量达2808.06万吨，约为“十五"末的3倍。截止2011年，我国耐火材料行业共有规模以上企业1917家，从业人员超过30多万人，实现销售收入3376.79亿元，实现产品销售利润477.37亿元。

　　对耐火材料（轻烧镁球、轻烧镁粉等）的性能，粒度的选择极为重要。粒度的正确选择直接影响耐火材料的质量，微粉及超微粉技术的引入，大大提高耐火材料制品的致密度，促进样品的烧成，提高制品强度，改善耐火材料的耐用性和抗冲刷性。对于不定性耐火材料，尤其对于低水泥、超低水泥浇注料和自流浇注料，超微粉起着一定的结合剂作用，并且有减水效果。微粉的粒度及分布对试样的加水量和流动性以及材料的性能影响也很大。

Refractory materials (light-burned magnesium balls, light-burned magnesium powder, etc.) are a class of inorganic non-metallic materials with a fire resistance of not less than 1580 ° C. It is widely used in various fields of the national economy such as steel, non-ferrous metals, glass, cement, ceramics, petrochemicals, machinery, boilers, light industry, electricity, and military industries. It is an essential basic material to ensure the production and operation of these industries and technological development. It plays an irreplaceable role in the development of high-temperature industrial production.

2001Since 2001, driven by the rapid development of high-temperature industries such as iron and steel, nonferrous metals, petrochemicals, and building materials, China's refractory industry has maintained a good growth momentum and has become a major producer and exporter of refractory materials in the world. In 2011, China's refractory output accounted for about 65% of the world's total, and its production and sales ranked first in the world.

According to statistics, the output of refractory raw materials and products increased steadily from 2001 to 2010, of which the end of the "Tenth Five-Year Plan" period was about twice that of 2001; the output of national refractory products reached 28.008 million tons in 2010, about three times that of the "Tenth Five-Year Plan period". . As of 2011, China's refractory industry has a total of 1,917 companies above designated size, employing more than 300,000 people, achieving sales revenue of 337.679 billion yuan, and product sales profits of 47.737 billion yuan.

For the performance of refractory materials (light burned magnesium balls, light burned magnesium powder, etc.), the choice of particle size is extremely important. The correct choice of particle size directly affects the quality of refractory materials. The introduction of micropowder and ultrafine powder technology greatly improves the density of refractory products, promotes the firing of samples, increases the strength of products, and improves the durability and erosion resistance of refractory materials. For uncertain refractories, especially for low-cement, ultra-low-cement castables, and self-flowing castables, ultrafine powders play a certain binding role and have a water-reducing effect. The particle size and distribution of fine powder also have a great impact on the amount of water and fluidity of the sample and the performance of the material.