Sand and stone are the important raw material that is used in engineering construction. At present, especially because of the wide application of concrete building structure, the amount of the sand and stone manufaccturing line used is also increasing constantly and mining companies are asking more and more to the quality of these raw materials and require them to catch up the technological standard in the developed countries in a basic way. For this reason, more and more mining enterprises choose to expand into the concrete and stone and sand aggregate industry. Last year, the excess production capacity in the cement industry caused downturn of this market, so that many large-sized cement manufacturing companies are seeking for new market. Some enterprises want to embark on transformation and upgrading, increase the development advancement of the company and strive for new economic increase points. With the approaching of the tide that the cement industry speeds up to integrate the resources and many companies merge and recombine together, many of them are transform and march into the relevant industry and the stone and sand production is one of them.

 

Although the sand and stone manufacturing industry rely on the application of new type equipment such as crushers and sand making device and the production capacity has been improved significantly, the number of the other industries that advance into the stone and sand market is very large, different knowledge and superficial comprehension to this field, there are a lot of problems existing in this field:

 

(1)The quality of many stone and sand products is very low which has a bad influence on the quality of the concrete. The low quality of the stone products leads to the low quality of the concrete to a great extent.

 

(2)The implementation and surveillance of the standard of this industry is not strict. No one carries out the standards, nor supervise them, which lead to vicious circle to a great extent and the quality and the stone product cannot be improved.

 

(3)Many people misunderstand or know little about this industry.

 

(4)The customers and even the manufacturers do not know completely the effects of the sand aggregate so that they cannot take the initiative to improve the product quality.

 

(5)The consumption of the resources is huge. As a resource-dependent industry, huge resource consumption does not shows in this industry, so if you want to gain more economic benefits with less cost, you will have to solve this problem fundamentally.

 

Resource shortage and environmental protection enhancement are problems that many places are faced with. As a professional sand maker and professional vibrating screen manufacturer, according to many years’ experience specializing in the research and development of the stone and sand products and the results that survey and research recently, KLD Machinery thinks that exploitation of the mining tailings and artificial sand is the important way to replace the building-used sand and this way we can solidify and develop environmental protection and increase the resource use rate.