How to select milling and crushing equipment

The types of rocks you are working with will have an impact on the type of equipment you need to get the job done.
Before buying equipment you need to take a long look at your rocks or ores and ask the following questions:
How hard is the material?
How abrasive is the stone?
How compressed is the material?
What size is the material you are crushing?
Before selecting any machinery, you need to find out if you are working with a hard and abrasive , material used to grind, smooth, cut, or polish another substance. Natural abrasives include sand, pumice, corundum, and ground quartz. Carborundum (silicon carbide) and alumina (aluminum oxide) are important synthetically produced abrasives. substance, like copper ores Copper ores may refer to:
Bornite
Chalcocite
Cuprite
Tennantite
Tetrahedrite
Malachite
, or a softer stone, like a limestone-type material.
While limestone, sedimentary rock wholly or in large part composed of calcium carbonate. It is ordinarily white but may be colored by impurities, iron oxide making it brown, yellow, or red and carbon making it blue, black, or gray. The texture varies from coarse to fine.
..... Click the link for more information. can be crushed by the same machine that is capable of crushing harder ores, it may be difficult for your crusher to deal with tougher material if it is designed for softer substances.
You need to ensure the crusher will be used so it reflects the type of material you are crushing. To do this, you should learn if you need a single or double toggle To alternate back and forth between two states.
toggle - To change a bit from whatever state it is in to the other state; to change from 1 to 0 or from 0 to 1. This comes from "toggle switches", such as standard light switches, though the word "toggle" actually refers to crusher.
Even though the majority of single toggle crushers are well built, due to the motion of the machine they should be reserved for use with soft and nonabrasive materials. Hard rocks and ores, those with 18,000 to 20,000 PSI, are more economically crushed in double toggle crushers.
This is because the wear factor with a double toggle machine is less than with a single crusher, which will work harder to crush stronger material. The double toggle is robust enough to deal with hard ores, and because of this, the life span of the machine is significantly greater than with the single.
You should also give consideration to how many tonnes of rock a day you expect to crush in the machine, and whether there will be a secondary, or even a third step in the process before the rock reaches its final size.
A decision will also need to be made as to whether you plan to filter out smaller material before or after the crushing process. Prior to entering the crusher, finger-like accessories can be installed to separate the smaller pieces of stone to prevent it from being crushed along with the larger pieces.
If you don't have these fingers, you may need a larger crusher because more material will be going through the machine.
When you purchase you will also want to decide whether to buy a portable or stationary plant to work with. Portables are more useful if you are a contractor going site to site, compared to a stationary plant, which is heavy duty, and is better if ore and rocks are being brought to a single site.