About us

Shanghai Dongmeng Road & Bridge Machinery Co., Ltd. is a modern enterprise specializing in the research and development, manufacturing and sales of crushing and screening equipment (fixed and mobile). It has passed the ISO9001: 2015 international quality system certification. Relying on the pioneering and enterprising spirit of entrepreneurship, the unremitting pursuit of product excellence and Shanghai's industrial chain advantages, the company has created a batch of highly competitive superior products, which are widely used in construction waste recycling, mining, engineering construction, earthwork, etc. field.

Weathered stone crusher
Introduction to weathered stone crushing
Weathered sand is an intermediate product of the weathering process of surface rock formations. Its durability is worse than ordinary soil materials and its physical and mechanical properties are relatively unstable. Weathered sand is characterized by its angular shape, weak strength, large unevenness in size distribution, and a large amount of fine soil particles. It uses weathered sand with abundant resources as raw materials, which is convenient for material retrieval, low cost, and waste Features of Weibao.
Weathered stone processing technology
Weathered stone processing usually requires coarse crushing, medium crushing, fine crushing and sand washing steps.
The specific process is: the vibrating feeder uniformly transports the weathered stone to the jaw crusher for coarse crushing. The coarsely crushed weathered stone is transported to the cone crusher through a conveyor belt for intermediate crushing, and the medium-sized weathered stone is processed through a vibrating screen. After screening, the materials that meet the requirements are sent to the sand making machine for fine crushing and sand making, and the materials that do not meet the requirements are returned to the cone crusher to continue crushing. In the sand making machine, the weathered sand finely crushed and formed by the sand making machine is cleaned and removed. Clean weathered sand is the finished sand we want to get.

Production advantage
1. The production line equipment has high degree of automation, low operating cost and high crushing rate.
2. The weathered sand production line is equipped with an advanced electronic control operating system to ensure the smooth discharge of the entire process, reliable operation, convenient operation, green and energy-saving.
3. The weathered sand production line has large output, low pollution and easy maintenance. The machine-made sand produced meets the national construction sand standard, with uniform product size, good grain shape and reasonable gradation.
4. Reasonable matching of crushing equipment at all levels and rigorous cross-space layout. It has the characteristics of small area, high investment and economic benefits, good quality of crushed stone, and low output rate of stone powder.