19/08/2014
How to tackle the following five sticky problems confronting sand making industry?
Urbanization has promoted the rapid development of infrastructure and expanded a large market of gravel aggregate. Gravel aggregate of high quality has won the favor of the public in construction industry. Driven by the considerable profits in sand making industry, an increasing number of people have trod the boards. Consequently, the production capacity has grown by a wide margin.
However, the large capacity cannot conceal the fact that manufactured sand is developing in an extensive way. Now, the sand making industry is plagued by five problems and they are:
1. High cost and Low profit
Compared with river sand, Superior manufactured sand can ensure the quality of buildings. In the past, the stable and low price was an advantage of manufactured sand. However, the increased cost of material and human resources as well as the more intensified efforts our government has made on environment protection have resulted in higher input cost and operational cost of manufactured sand. What’s worse, the extensive development mode as well as dereliction of supervision and control of manufactured sand have accounted for the worsening market environment in which all kinds of costs have grown by a wide margin, prices are on the decline and net profits decreased.
“Champion” short process sand making system, with framework structure, are blessed with many advantages, such as covering smaller areas and shorter construction period and little investment in civil engineering. They can truly lower the aggregate cost, improve the quality of concrete and create great value for customers. Take the “champion 150” short process sand making system with the record of producing 500 thousand squares of concrete as an example:
Serial number Details
1 Saving 2.3 degrees of electricity per ton German BHS saves 1.5 degrees of electricity
Dispensing cone crusher; saving 1 degree of electricity per ton
2 Vulnerable parts and maintenance Saving one RMB per ton of gravel
2.Big investment and Complex process
The traditional production line of gravel, always adopting two sections even three sections, is featured by high cost and complex process. It may cost customers several millions. The more production processes are increased, the larger the investment and operational cost will be.
“Champion”short process sand making system, which adopts German BHS, can produce superior manufactured sand with the aggregated rocks of150mm in sizes, dispense cone crushers, greatly simplify the process, and reduce investment in the equipment as well as the production cost considerably. Compared with the conventional VSI sand makers, it has the following advantages:
First, sand making rate can increase by 50%.
Second, abrasion of the rotor can be alleviated greatly.
Third, electricity consumption can be lowered by 40%.
3. Low quality and asymmetry
Infrastructural project like high speed rail and high-rise building construction has higher requirements on the quality of aggregate now. The fineness modulus of aggregate should be controlled within 2.2-3.0mm (medium sand might be the most appropriate). However, those problems like high proportion of elongated flaky particles, asymmetrical fineness module, and harmful gradation in small sand making machine lead to poor work ability. Short process sand making system can control the sand gradation in 2.6mm-3.0mm. Also, it can produce the fine sand between 0.15mm-0.6mm with good shape. Short process sand making machine can produce the high quality of sand, which obviously improve the mechanical property of concrete, and also the duality.
4. Large resource-wasting and substandard environmental protection
Sand making production line can cause serious pollution and much noise. Furthermore, resources are wasted greatly. Thus, environmental protection becomes an urgent problem confronting aggregate project. It is blessed with such advantages as zero discharge, low noise and vibration. Short process sand making system can be used to break stones, shape granularity, adjust gradation with completely enclosed structure. Equipped with automatic PPDC, it is tailored to meet the needs of clients in sand making industry and dry-mixed mortar industry. Thus, the dust emission is under 30mg/Nm3, which is recognized as the national criteria.
5. Low intelligence level
Sand making production line belongs to labor intensive industry, which needs large quantity of production and maintenance workers. Complexity of the production process and failures during the course have undoubtedly increased the cost. Short process sand making system adopts the long-distance monitoring system. Thus, IOT can monitor and inspect the production status in a long-distance. Thus, the real long-distance inspection, precaution, diagnosis are realized through this system. If there is anything wrong in construction site, this system can remind related workers to give inspection and maintenance.
