综合粉磨系统分析选粉机和辊压机

综合粉磨系统分析选粉机和辊压机粉磨在制造水泥工程中占有非常重要的地位，无论是生料(半成品)还是水泥(成品)需要通过粉磨来获得，每生产1吨水泥，需要粉磨各种物料3、5吨左右，电耗约为100～110kw.h，其中60％～70％的电耗消耗在粉磨中。

尤其是水泥粉磨系统比生料粉磨系统耗电量更大，这是因为水泥熟料质量差时，熟料中的硅酸二钙含量高时难磨，粉磨效率就会明显降低，电耗明显增加。

从水泥的水化和硬化反应、胶凝性有效利用率、强度尤其是早期强度来考虑，水泥磨的越细越好，这样还能改善其泌水性和易性等，水泥还要考虑产品的颗粒分布，力争做到节能、环保、确保水泥质量。

Grinding in manufacturing cement engineering occupies a very important position, either in the raw materials (semi-finished products) or cement (finished product) should be obtained by grinding, each 1 tons of cement production, need to all kinds of material 3, 5 tons, power consumption is about 100 ~ 110 kw h, 60% ~ 60% of energy consumption in grinding. Especially for cement grinding system is greater than the system power consumption of raw material grinding, it is because the poor quality of cementclinker, dicalcium silicate content in the clinker high grinding hard, grinding efficiency will be significantly reduced, power consumption increased significantly. From cement hydration and hardening reaction, gel intensity of effective utilization, especially the early strength, cement grinding of the thin the better, it also can improve its workability etc for secretion, and consider product of cement particle distribution and strive to achieve energy saving, environmental protection, to ensure the quality of cement.2.实现宏伟目标2. Achieve the ambitious goals节能是促进经济社会可持续发展、实现全面建设小康社会宏伟目标的关键之一。

工业是能源和原材料的主要消耗大户，水泥工业又是大量耗能的工业，因此节能降耗成为我国水泥工业长期而重要的任务，实现这一目标的关键在于提高粉磨效率，降低粉磨作业电耗。

实际生产中，以辊压机为代表的料床预粉磨系统是料床粉磨的主导。

预粉磨分为循环预粉磨、混合粉磨、联合粉磨和半终粉磨。

相对球磨机一级闭路粉磨工艺，联合粉磨和半终粉磨流程具有明显的系统优势。

虽然半终粉磨在系统增产方面具有更好的效果，但其节能幅度却略低于联合粉磨，且设备选型时受到一定限制，因此在实际工程设计中，联合粉磨流程得到了更加广泛的应用。

尤其在生产改造项目中，由于受到原有设备能力限制(尤其是原有选粉机的能力不足)，选用半终粉磨流程局限性较大，而循环预粉磨、联合粉磨流程则具有较大的可行性，这其中又以联合粉磨流程更能取得良好的节能增产效果。

Energy saving is to promote economic and social sustainable development, realize the comprehensive construction well-off society goal of one of the key. Industry is the main consumption of energy and raw materials, the cement industry is a large amount of energy, so saving energy and reducing consumption has become China's cement industry long-term and important task, the key to achieving this goal is to improve the grinding efficiency, reduce the grinding operation power consumption. In practical production, represented by roller press grinding system of material bed is bed grinding dominated. Pre grinding can be divided into circular grinding, blended grinding andcombined grinding and semi final grinding. Relatively closed circuit ball mill level grinding process, the combined grinding and semi final grinding process has obvious advantages. Although half a mill in the production system has a better effect, but its energy saving rate is slightly lower than combined grinding, and equipment type selection by certain limitations, so in the actual engineering design, combined with grinding process has been more widely used. Especially in plant modification project, due to the original equipment capacity limit capacity (in particular, the original classifier), selects the final grinding process limitations, large and circular pre grinding and combined grinding process has great feasibility, over-packaging that combined grinding process can obtain good energy saving effect to increase production.二、联合粉磨提高产量，降低能耗的主要措施2, combined grinding to increase production, reduce the energy consumption of the main measures1.水泥平均粒度1. Cement average particle size在水泥粉磨过程中，不是均匀的单颗粒，而是包含不同粒径的颗粒体一粒群，所以在评述水泥细度时若只用筛余这一简单的表示方法，差不多有90％多的水泥颗粒都通过筛孔成了筛下物，然而这些筛下物的颗粒大小并不清楚，故筛余量相同时比表面积也会出现很悬殊的现象。

水泥颗粒的平均粒度是表征水泥颗粒体系的重要几何参数，但所能提供酱油的粒度特性信息则非常有限，因为两个平均粒度相同的粒群，完全可能有不一样的粒度组成(颗粒级配)。

In cement grinding process, single particle is not uniform, but contains a grain of different size particles of the body, if use screen when on cement fineness so this simple representation, is about more than 90% of the cement particles through the sieve pore is undersize, however the undersize material particle size is not clear, so the screen allowance in specific surface area at the same time also can appear very different phenomena. Cement particles of the average particle size is an important geometric parameter characterization of cement particle system, but can provide information of characteristics of particle size is very limited, because both the average particle size of the same particle swarm, may have completely different particle size (grading).2.水泥比表面积2. The cement specific surface area国外水泥标准大多规定比表面积指标，一般都采用勃氏比表面积仪测定水泥比表面积，我国的硅酸盐水泥和熟料的国家标准规定已与国外标准一致。