The investment in sandstone stems from good policies. During the current economic crisis, industries such as engineering construction and cement and other raw materials will take the lead, and some investors have turned their supply direction to newly approved railways and highways.

At present, the supply of sand and gravel is in short supply, and many large projects implement the sandstone raw material contracting system, such as the 20,000 tons per day stone production line undertaken by Xinxiang Dingli Mining Equipment Co., Ltd. In the country’s huge economic investment, how much can the sand and stone industry ultimately absorb depends on the individual's ability to grasp and the speed of response.

After the crusher processing of aggregate larger than 4.75mm of aggregate is called coarse aggregate, commonly known as stone, commonly used gravel and pebble two. Crushed stone is a natural rock or rock made by mechanical crushing, screening, and particle size greater than 4.75mm. The pebbles are rock particles with a particle size of more than 4.75 mm, which are formed by natural weathering, water flow, sorting, and accumulation. The length of the pebbles and pebbles is greater than 2.4 times the average particle size of the granules to which the granule belongs. The thickness is less than 0.4 times the average particle size. The average particle size refers to the granules. The average value of the path). The construction pebbles and gravels should meet the technical requirements of the national standard GB/T14685-2001 “Construction Cobbles, Crushed Stones”. The choice of materials is very wide, as long as the general ore, using the corresponding processing equipment, the finished product can meet the demand for the building to feed together.

The crusher first broken, and then by the sand crusher and shaping after the particle size of 4.75mm below the aggregate is called fine aggregate, commonly known as sand. Sand is divided into natural sand and artificial sand according to the source of production. Natural sand is a rock particle with a particle size of less than 4.75mm formed by natural weathering, water transport and sorting, and accumulation, but does not include particles of soft rock and weathered rock. Natural sand includes river sand, lake sand, mountain sand and desalinated sea sand. Artificial sand is the general name for the sand and mixed sand treated by soil removal.

For sand and stone investment, first of all, it depends on the demand side of sand and stone, and the finished aggregate produced by it. Gravel is mainly used to provide concrete, building aggregates, and granular loose materials that act as skeletons or fillers in concrete. Points coarse aggregate and fine aggregate. Coarse aggregates include pebbles, gravels, waste slags, etc. Fine aggregates include fine sand, fly ash, and the like.

Xinxiang Dingli Mining Equipment Co., Ltd. can provide a variety of stone material production lines according to the customer's specific requirements for engineering stone and construction sand. The Xinxiang full stone crushing production line has a high degree of automation, large crushing ratio, high production efficiency, large amount of processing, broken The product has no internal cracks and high compressive strength. It is also easy to maintain and maintain the equipment. The wear parts are made of high-strength, wear-resistant materials that are currently internationally advanced. They have a long life with little loss and can bring considerable economic benefits to the customer.

Self Recovery High Speed Door

Auto Recovery Rapid Door

Zippered Quick door Features

Open: 1.2-2.0m/Sec

High airtight energy efficient : Zipper patented technology and curtain rail technology combines high seal ability for maximum energy efficiency

Self-healing maintenance cost savings :When the door by the impact and dislocation occurs , repeat mosaic patented technology that is deralling repair system starts automatically , without any manual and automatic reset to its original state force to effectively reduce maintenance time saving cost

High security : Curtain soft and elastic , without any load at the bottom of the door to change , to ensure that the operator in an emergency state in the collision to the door when the operation will not cause harm

Push pull dual hinge system :unmatched safety record and absolute tightness in push pull twin shaft system, loading close dependence and the curtain at the bottom of the traditional fast door to achieve , you can drive dual axis system so that the upper curtain sprocket perfect bite does not depend on the door of its own weight can be achieved fast closing , this patented technology to avoid the hard parts usage of

More than one million times the durability performance : speed doors reduce the use of materials , easy to wear , strong and flexible curtain is very durable , can withstand million of opening and closing operation ,

in the use of some products has reached 500 million times for opening and closing

The soft curtain anti-collision fast door has simple structure design, which is beneficial to stable operation, reduces the frequency of repairing and replacing wearing parts, effectively improves the durability and service life of the equipment, and the curtain can be derailed in the event of an accidental impact, and during the ascent Automatic reset, no need to manually repair and reset the whole process.
Heating devices are included on both sides of the column.
The structural design of this product is characterized by trouble-free operation up to 150,000 times per year. It has the highest practicality and the lowest maintenance cost.


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