项目介绍（简介、技术特点、应用范围、市场前景、效益分析及对投资者要求）
(中文)
简介：本项目针对大型干法水泥窑窑口部位的工况条件及其对耐火材料性能的要求，通过选用较低成本原料、采用适当的结合剂和添加剂，以开发出一种优质的窑口部位用高铝质耐火浇注料。
技术特点：本项目以特级矾土和一级矾土熟料为主要原料，以铝酸钙水泥为结合剂，同时加入氧化铝微粉、二氧化硅微粉、钢纤维，合理设计试验方案，适当制备和处理试样，研究了骨料组成及添加剂（钢纤维）加入量对浇注料性能（气孔率、体积密度、烧成线变化、抗折强度、抗压强度及抗热震性）的影响。实验结果表明：合理的骨料组成会显著提高耐火浇注料的性能。在考虑生产成本的情况下，当颗粒级配相同时，使用成本较低的一级矾土逐渐代替高成本原料是切实可行的。当骨料中含有碳化硅时，随着其含量增多，耐火浇注料的抗折、耐压强度变化复杂，试样的抗热震性逐渐变差。钢纤维的加入可以改善耐火浇注料的力学性能，但并不是越多越好，其掺入量宜在1%～1.5%之间。
随着水泥生产技术的迅速发展，水泥回转窑的大型化趋势也越来越明显。新型干法水泥窑由于窑温高、窑速快、生料成分的变化、碱侵蚀更严重、结构复杂和节能要求高等工作特点，使得耐火材料的使用环境更为苛刻，从而也对耐火材料的性能提出了更高要求，因此，必须针对窑各部位不同的使用要求研制不同的新型耐火材料。
截至目前为止，无论是耐火材料的品种、数量、质量及其生产工艺和装备水平，还是耐火材料的使用和合理配置，都已经有了很大程度地发展与进步。对于新型干法水泥窑来说，复杂的结构和节能等方面的要求也使得砖型和窑衬的设计变得复杂。在水泥窑的某些部位，特别是那些由于结构复杂或窑体变形而不适宜采用耐火砖的部位，采用耐火浇注料比采用定型砖更加适合。在新型干法水泥烧成系统中，窑口是十分关键和特殊的部位。该部位使用条件苛刻而复杂，衬体材料损坏较快，而衬体的更换必须要在停窑冷却后才能进行，因此，窑口衬体材料的好坏直接制约着熟料烧成系统的运转率和水泥熟料的产量。
目前，国内新型干法水泥窑口普遍采用耐火浇注料作为衬体材料，且大型干法水泥窑窑口使用的耐火浇注料的使用寿命一般为 4～6 个月。本项目通过选用较低成本的原料，确定合适的添加剂加入量及合理的骨料组成，从而研制出优质的低成本水泥窑口用高铝质耐火浇注料。这样不仅可以更好的提高窑口用耐火浇注料的性能，同时也有利于企业降低生产成本，提高市场竞争力；更是对资源的一种合理、有效的利用，节约我国自然资源。
(英文)
Introduction: In order to meet the requirements of the working conditions of Large dry cement kiln kiln mouth parts and its performance requirements for refractory materials, the project uses Low cost raw materials and suitable binder and additives to select a high-quality kiln High aluminum refractory castable.
Technical characteristics: This project use special bauxite and a bauxite clinker as the main raw material and use calcium aluminate cement as a binder, while adding Alumina powder, silica powder, steel fiber. The project design the test program, preparate and treat samples rationally. The projec study effect of castable properties of aggregate composition and additive addition. Experimental results show: Reasonable aggregate composition will significantly improve the performance of refractory castables. In the case of production costs, it is practicable to use costly primary bauxes to replace high cost feedstocks when particle gradation is the same. When the aggregate contains silicon carbide, with its content increased, refractory castable bending, pressure strength changes are complex, the thermal resistance of the sample gradually deteriorated. The addition of steel fiber can improve the mechanical properties of refractory castable, but not the more the better, the amount of its mixture should be between 1% to 1.5%.
With the rapid development of cement production technology, the trend of large-scale cement kiln is becoming more and more obvious. The new dry-process cement kiln makes the use of refractory materials more harsh because of the high temperature of kiln, the speed of kiln, the change of raw material composition, the more serious alkali erosion, the complicated structure and the high energy saving requirement. Therefore, the use of different parts of the kiln must be different requirements of the development of different new refractories.
Up to now, both the variety of refractories, quantity, quality and production process and equipment level, or the use of refractory materials and rational allocation, have been a large degree of development and progress. For new dry cement kilns, complex structural and energy saving requirements also make brick and kiln lining design complex. Some parts of the cement kiln, especially those due to the complex structure or deformation of the kiln is not suitable for the use of refractory bricks, the use of refractory castable than the use of stereotypes brick is more suitable. In the new dry cement firing system, the kiln is very critical and special parts. This condition is harsh and complex, the lining material is damaged faster, but the replacement of the lining must be carried out after the kiln is cooled. Therefore, the quality of the kiln lining material restricts the operation rate of clinker firing system and the production of cement clinker.
At present, the domestic new dry cement kiln mouth commonly used refractory castable as lining material. Large-scale dry kiln kiln use of refractory castable life is generally 4 to 6 months. The project through the selection of lower cost raw materials, to determine the appropriate amount of additives added and a reasonable aggregate composition, thus developing high-quality low-cost cement kiln with high-alumina refractory castables. This will not only improve the performance of the furnace with refractory castable, but also help enterprises to reduce production costs and improve market competitiveness; is a reasonable and effective use of resources, saving our natural resources.
