Sand Washing

. The birth unit of the problem

First step: stone materials

In the production of ready-mixed concrete, about 70% of it consists of stone materials. In order to produce stone materials, first the raw materials, including soil mixture, are extracted from the mine, and after being transferred to the material production unit, large pieces of stone are converted into smaller pieces and crushed by sand and almond production machines and cut into the required sizes according to the standard. existing and international ones are graded.

Second step: Cement

Cement is known as the main factor of concrete strength and has different models, each of which is used for different applications and areas. The cement used in concrete factories is often type 2. The required cement is loaded from the cement factory by the cement bunkers and then transferred to the concrete factories and transferred to the cement silos by wind pressure and ready for use in the batching plants.

Third step: water

The water required for concrete production must be potable and free of taste, smell, and additional substances according to the standard. The water prepared in Nano concrete company is fresh water and has minimal impurities (EC).

. Amin Nano concrete sand washing unit

Fourth step: Additives

Today, additives are an integral part of concrete production. Additives are produced according to different bases, each of which has its own uses. The newest generation of these materials is based on polycarboxylate ether. After selecting the desired mixing plan, the batching operator, if necessary, reduces the amount of cement water and adds the required additive according to the required amount.

. birth unit or (batching)

The third step: quality control of raw materials

After preparation, the raw materials are checked and tested by the quality control unit, and if necessary, they are prepared for consumption and production according to the existing standards and the workshop, and the mixing plan is presented to the production unit.

Fourth step: concrete production

The prepared raw materials are transferred to the concrete production line (batching). Stone materials are loaded with a loader and dumper and then they are discharged separately (sand, sand, peas…) in the material storage tanks behind the batching. In some batchings (batchings of the Liebhero design…) behind the batching, it is emptied as a depot and transferred to the batching by a drag line. The concrete production unit orders the production of concrete according to the required strength, size and type of concreting section. received from the sales unit and then produces concrete according to the mixing plans received from the quality control unit.

The batching operator produces concrete automatically according to the mixing plan in the batching system and the order of the production unit. The stone materials are first weighed and then fed into the tank of the batching pot with a conveyor belt. At the same time, the amount of cement, water and concrete additives are weighed and discharged into the batching pot. The raw materials are mixed during the standard period of time, and then they are emptied into the pot of the truck mixer. And this procedure is repeated until the order is completed. When loading concrete, the truck mixer driver determines the required amount of additive in the additive injection device and fills the tank of the truck mixer concrete additive to be used in the project. During this time, the water tank of the truck mixer is also filled.

. concrete distribution unit or (scale)

Fifth step: quality control

After carrying out the process of loading concrete in the truck mixer, the machine moves and goes to the concrete control unit. At this stage, the produced concrete is checked for its appearance, including granulation and slump, and in case of necessary approval, it goes to the distribution unit.

Sixth step: concrete distribution

The concrete distribution unit, which is a subset of the concrete production unit, first weighs the truck mixer and checks the amount of cubic meters of concrete produced. Then, according to the instructions of the production unit, he prepares the concrete bill of lading according to the required standards and delivers it to the truck mixer.

Seventh step: concrete transfer and pumping

After receiving the bill of lading, the truck mixer goes to the concreting place in the shortest possible time. The duration of the transfer of concrete to the project depends on various parameters, including weather conditions and the temperature of the environment and concrete, the type of concrete, the conditions of the concreting site, etc. After the truck mixer arrives at the project site, it is installed behind the concrete transfer pump. After controlling the concrete by the truck mixer driver and the pump operator in terms of the appearance of the concrete, it is emptied into the tank of the concrete transfer pump and transferred to the place of concreting section. If necessary, before emptying and transferring the concrete, an additive is injected into the concrete from inside the tank, and after hardening for the required time and homogenization, it is ready for pumping.