The fineness modulus of the finished sand is too high mainly for internal reasons and external reasons. Today, we take you to analyze the specific reasons and corresponding solutions.

First of all, the fineness modulus believe that customers in the industry are not unfamiliar, it is used to measure the thickness of the sand parameters, the greater the fineness modulus, the larger the particle size of the sand, the coarser the sand; The smaller the fineness modulus, the smaller the particle size of the sand and the finer the sand. The fineness modulus range of ordinary concrete sand is generally between 1.6-3.7, and medium sand is appropriate, or the combination of coarse sand and a small amount of fine sand is used. In mortar specific applications, such as wall plastering mortar, it is usually recommended to use sand with a fineness modulus of 1.8-2.8, which helps to ensure good adhesion of the mortar to the base and adequate filling of the wall gaps. Different types of mortar have different requirements for the fineness modulus of sand, which need to be adjusted according to the specific situation.

Secondly, excluding process and equipment selection, sand making host, screening equipment, sand powder separation equipment is the core equipment of the entire sand making production system, we need to try to choose professional manufacturers in the industry to give us the design scheme and production equipment to ensure the rationality of the process and the reliability of the equipment.

Then, we have to analyze the external reasons, if the raw material is too hard to break, you need to replace the soft rock raw materials, such as limestone, dolomite, etc., the hardness is not high, more easily broken materials. If the raw material diameter is too large, it is necessary to change the use of small diameter raw materials or small diameter raw materials.

Finally, look at the internal reasons, if the screen configuration of the screening machine is not suitable, you can choose the way of matching the lowest screen size, such as the use of two normal mesh screens, plus two small mesh diameter screens. In addition, if the air volume of the sand powder separator is too large, the fan speed needs to be adjusted to ensure the fine sand content.