With the continuous tightening of natural sand mining and the continuous strict environmental protection requirements of the sand and gravel industry this year, the production of machine-made sand and gravel aggregates is replacing natural sand step by step due to its stable supply and rich raw materials. At the same time, the quality of machine-made sand and gravel aggregates is gradually being paid attention to. It is an indisputable fact that the downstream has higher and higher requirements for the quality of machine-made sand and gravel aggregates. If you want to have a good market, it is imperative to improve the quality of sand and gravel. It must be done, let’s take a look with the editor today, what are the factors that affect the quality of machine-made sand and gravel aggregates!
What are the factors affecting the quality of machine-made sand and gravel aggregate?
- Selection of parent rock
First of all, machine-made sand and gravel aggregates are mostly used in engineering fields such as construction, roads, water conservancy and hydropower, so factors such as compression resistance, wear resistance, weathering degree, corrosion resistance, and whether they are green and non-toxic need to be considered. It is necessary to integrate the chemical properties and physical properties of rocks, but there are many rocks suitable for sand making, such as granite, basalt, bluestone, river pebbles, limestone, etc. are good raw materials for machine-made sandstone aggregates.
Furthermore, it is the cleanliness of the parent rock. In the selection of sand field mines, the survey work should be done well, and the mines with thin covering soil, less mud in the interlayer, high strength of the parent rock and good rock integrity should be selected, so that during mining, The impurities and sediment mixed in will be relatively less, and it will be easier to control the mud content of the machine-made sand and gravel aggregate to ensure the quality of the machine-made sand and gravel aggregate.
- Selection of sand and gravel aggregate production equipment
As the core sand and gravel aggregate production equipment, the choice of sand making machine is particularly important. At present, impact sand making machines are mainly used in the market, including VSI6X sand making machine, VSI5X sand making machine, and VSI sand making machine, all of which use impact force to crush and make sand. Is its main crushing principle:
“Stone on stone”: mainly used for shaping, complete central feeding, the material ejected from the wheel during the crushing process impacts the lining of the material without directly contacting the metal components of the equipment, reducing the loss of equipment, and the shape of the discharged material is good. , but the powder content may be slightly more.
“Stone striking iron”: It is mainly used for sand making, and the central feeding is accompanied by cascading feeding. During the crushing process, the material directly collides with the impact block. The crushing efficiency is high, but the wear cost of the equipment is high, and the crushed material The grain shape is slightly poor.
The two crushing methods have their own advantages and disadvantages, so some friends may ask: Is there a sand making machine that combines the advantages and abandons the disadvantages?
Of course, VSI6X sand making machine, VSI5X sand making machine and VSI sand making machine are all sand making machines with dual functions of sand making and shaping. VSI6X sand making machine is an upgraded version of VSI5X sand making machine and VSI sand making machine. The shaping effect is stronger, the finished grain shape is better, and the production capacity is also higher; it can well meet the construction sand standards. These three models have a variety of configurations. You can choose according to your needs. For more equipment information, please contact Customer service personnel to understand.