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The part of the ore that has no use value or cannot be used is called gangue. For example, tungsten ore is mostly formed in the quartz vein, and this quartz vein is called gangue.
The rock around the ore body is called a surrounding rock. The surrounding rock in the upper part of the ore body is called the surrounding rock or the top plate; the surrounding rock in the lower part of the ore body is called the surrounding rock or the chassis, and the rock sandwiched in the ore body is called the stone.
The surrounding rock and stone of the ore body are called waste rock, and the concept of waste rock and ore is relative. The rock with no industrial grade collected in the mining process is called waste rock.
Concrete admixtures is a material refers to the mixing concrete mixing before or during the process of mixing with to improve the performance of concrete .Concrete admixture content is generally not more than 5% of the mass of cement.The quality of concrete admixture products must conform to the national standard "concrete admixture"
Concrete Admixtures,Concrete Additives,Plasticizer In Concrete,Superplasticizer In Concrete
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