三个主要的破碎耗功学说
在选矿厂中,电能的绝大部分用于破碎矿石。为了深入理解破碎矿石过程,评价破碎机械的效率,和找寻更有效的破碎方法,百多年来出现了很多有关破碎耗功的理论。其中有三个最主要的,为举世所公认,在此将作介绍。
大家都知道,破碎过程是不会自动发生和不可逆的,必须外力对矿石作功,克服它的内部质点间的内聚力,才能发生破碎。当外力对矿石作功使它破碎时,矿料的潜能也因此功的转化而增加。因此,破碎耗功理论实质上就是,阐明破碎过程的输入功与破碎前后矿石的潜能变化之间的关系,从而明确输入功是怎样耗去的。破碎物料时,它的强度、给矿粒度、产品粒度和耗功,是直接易为人查觉的,因此各种功耗学说都必须确定出它们间的关系,这是各种破碎耗功学说的共同点。但因每一种耗功学说都从不同的角度看问题,所以它们的物理根据和导出的数学形式也就不同。
1PR雷霆格学说
2基尔皮切夫或基克(1855)学说
3邦德学说
The three main crushing power consumption theory
在选矿厂中,电能的绝大部分用于破碎矿石。为了深入理解破碎矿石过程,评价破碎机械的效率,和找寻更有效的破碎方法,百多年来出现了很多有关破碎耗功的理论。其中有三个最主要的,为举世所公认,在此将作介绍。
In mineral processing plants, the vast majority of electric energy used for crushing ore. To deeply understand the process of ore's broken, the efficiency evaluation for broken machinery, and seek more effective methods of broken, hundred years appeared many theories for crushing power comsumption. There are three major and universally recognized, and will be introduced here.
大家都知道,破碎过程是不会自动发生和不可逆的,必须外力对矿石作功,克服它的内部质点间的内聚力,才能发生破碎。当外力对矿石作功使它破碎时,矿料的潜能也因此功的转化而增加。因此,破碎耗功理论实质上就是,阐明破碎过程的输入功与破碎前后矿石的潜能变化之间的关系,从而明确输入功是怎样耗去的。破碎物料时,它的强度、给矿粒度、产品粒度和耗功,是直接易为人查觉的,因此各种功耗学说都必须确定出它们间的关系,这是各种破碎耗功学说的共同点。但因每一种耗功学说都从不同的角度看问题,所以它们的物理根据和导出的数学形式也就不同。
As we all know, the crushing process is not automatic and irreversible, it is necessary to do the work of the ore, to overcome its internal cohesion between particles can be broken. When the external force on the ore as power to make it broken, the potential of the mine, so that the transformation of power and so on. Therefore, broken power comsumption theory essence is to clarify the broken relationship between before and after the process of input power and broken ore potential changes, so as to clarify the input power is how consumption to the. Crushing material, its strength, to the ore particle size, the particle size of the product and power comsumption is direct and easy to check to feel, so various kinds of power theory must determine the relationship between them, which is all broken power comsumption theory have in common. But because each kind of theory of power comsumption are from a different point of view look at the issue, so their physical basis and derived the mathematical form is also different.
1PR雷霆格学说
1PR theory of thunder
2基尔皮切夫或基克(1855)学说
2 Kilpi Chief or Jake (1855) theory
3邦德学说
3 bond theory |