Why can not sea sand for real estate construction

Natural sand scarcity has become more and more people's consensus, the river can not meet the market demand for sand and gravel, can only start from the machine sand, which also makes the mechanism of sand in recent years more and more hot, the system of sand production line has become A lot of gravel plant competing to buy products, high-quality sand production line equipment is more manufacturers of sand and gravel in the small and medium enterprises in the stand out of the magic weapon.

Some people questioned, since the river sand less and less, can not meet the natural sand and gravel demand, why not sea sand? The existence of sand is certainly a lot of sand, and there is no river sand excavation damage to the river environment, there are security risks and other issues, can not be used for infrastructure construction?

Joyal machinery sand and gravel experts tell you the answer, not desalinated sea sand can not be used as building materials. This is the state strictly prohibited, why is this?

We all know that with the continuous development of society, now the real estate construction are mostly made of sand and concrete reinforced concrete construction, although the sand itself is pure, low mud content, but because of its moisture and a large number of free chlorine Ions and other acid ions, when they are used in reinforced concrete, these free chlorine ions will corrode the steel, resulting in expansion of steel, which caused the structural components of their own expansion and deformation, bearing capacity decreased, seriously affecting the safety of the building.

The damage caused by the desalination of the sea sand to the rebar is very serious. If the acid ions such as chloride ions are corroded, the steel bars are getting thinner and the mechanical properties are decreasing and the yield strength and elongation are significantly decreased. A large number of water molecules, easy to make steel rust, reinforced rust after the expansion of the volume, will burst around the concrete, resulting in cracks, serious and even lead to the surface of the concrete off; ribbed steel to rely on the surface of the crescent-shaped ribs Concrete anchored together, like the screw on the thread, not easy to fall off, once the steel corrosion, crescent-shaped thread corrosion damage, ribbed steel bar into a smooth cylindrical, anchor performance significantly reduced.

Desalination of the sand can be used for construction, but the high cost of desalination desalination, and the process requires a higher. Although there are some areas have used sandals as a precedent for concrete ingredients, but the fact that there is indeed a reduction in the use of the building life. Before the domestic river sand is unregulated state, easy access, and now the cost of sand is not high, and the safety is relatively high, so rarely use sand.

Through the above description, I believe we have to understand why the sand is not used for construction, more information on aggregate aggregate, please contact the Red Star machine to understand the consultation.

What equipment does the stone factory need?

With the rapid development of economy and technology, roads, railways, urban construction and other construction areas gradually increased, regardless of traffic development or urbanization development, have greatly promoted the aggregate demand for aggregate, and gradually appeared in short supply market conditions, which To the quarry to provide a favorable business opportunities, many investors are optimistic about the stone processing industry, then the stone factory which equipment? Next, joayl machinery for everyone to introduce.



One,the  jaw crusher

Jaw crusher, is the stone plant crushing production line on the primary equipment selection, simple structure, streamlined, with a very good crushing effect, performance advantage is very prominent.
1, compact structure, smaller size, easy installation and operation, and save the basic investment costs of nearly 1 million;
2, single energy saving about 40%, broken than large, 60% increase in production efficiency, yield up to 2200t / h;
3, discharge mouth design is reasonable, evenly discharged, the output of large, stable quality, beautiful grain.

Second,impact crusher

Impact crusher is used to stone in the fine plastic processing, beautiful appearance, easy to operate, the product features significantly.
1, high chrome plate hammer, strong and durable, anti-wear, impact resistance, machine life extension of about 1-3 times;
2, after the broken stone grain shape is good, was cube, less impurities, no crushing, quality is very good;
3, no pollution, low noise, smooth operation of equipment, fewer failures, saving operating costs nearly 3 million.
Third, the circular vibrating screen

 
The purpose of the circular vibrating screen is to rationally sieve the broken stone into a variety of different specifications, in order to better access to the next stage, help to provide crushing effect. The device structure is simple, small size, light weight, easy installation, fast operation, low energy consumption, no pollution, and the screening effect is very good.
Fourth, the vibration feeder

The role of vibration feeder is the material evenly and orderly into the crusher, the feeding uniform, reliable quality, durable, smooth vibration, energy saving, is a very good feeding equipment.
Five, belt conveyor

Belt conveyor, it can be said that the whole stone factory crushing production line of the hub part of its kinetic energy consumption is low, high production efficiency, transport volume, the use of flexible, popular stone factory investors love.

Cuál es el papel de la espuma de flotación en las máquinas de flotación

La base teórica de la máquina de flotación es aproximadamente la misma, es decir, las características hidrófobas (hidrofílicas o de petróleo) de las propiedades hidrófobas del propio gránulo pueden agregarse a la interfaz de gas líquido o de agua-aceite. En éste, hay una cosa que juega este papel muy importante, que es la burbuja. En cuanto a la burbuja en el proceso de flotación específicamente desempeñar un papel importante, es decir, shanghai joyal maquinaria y debemos centrarnos en el problema.

La espuma es el motor de la correa trapezoidal para promover la rotación del impulsor, lo que resulta en la formación de presión negativa centrífuga, la inhalación de suficiente aire en la fuerza centrífuga del impulsor formado con el propósito principal es enriquecer los minerales hidrófilos, mejorar el procesamiento de minerales Precisión y reducir la dificultad de procesamiento de minerales, tales como cobre, plomo y otros procesamiento de minerales se convierte en fácil y eficiente, para lograr el propósito de alta calidad y beneficio eficiente.

En el proceso de flotación de espuma, estas burbujas desempeñan un papel muy importante, ya que estas burbujas, de modo que las partículas de mineral o polvo mineral se pueden unir a una espuma pegajosa, estas burbujas llevan estas partículas de la pulpa de la esclavitud, Interfaz para eliminar las partículas de mineral, con el fin de lograr la flotación, obtener concentrado.

Las partículas de mineral en la pulpa están en contacto con las burbujas y la colisión y flotabilidad de las partículas de mineral se adhieren selectivamente a las burbujas y se llevan a una capa de espuma mineralizada que consiste en una composición trifásica gas-líquido-sólido, raspada mecánicamente o Eliminado Desbordamiento de la superficie de la pulpa, y luego deshidratación, secado en productos concentrados. No puede flotar la ganga y otras partículas minerales, con la pulpa de la parte inferior del tanque de flotación como productos de relaves descargados.

En la flotación de burbujas, hay un elemento indispensable, es decir, agentes de flotación. El efecto del agente es aumentar la estabilidad de la espuma mineralizada durante el proceso de flotación y permitir que la dispersión del aire y la formación de espuma procedan independientemente, aumentando la hidrofobicidad de la superficie del mineral natural y aumentando la separación de las partículas hidrofílicas e hidrófobas. Por supuesto, los diferentes minerales utilizados en los agentes de flotación también son diferentes, sólo los reactivos más adecuados, con el fin de maximizar la recuperación de los minerales, la reducción máxima de los costos de procesamiento de minerales, para obtener los mayores beneficios.

En la flotación, la buena máquina de flotación juega un papel decisivo, buena máquina de flotación producido espuma más refinada, mejor adhesión mineral mejor, por lo que el costo de beneficio mínimo para obtener el mejor efecto de procesamiento de minerales. Equipo de procesamiento de minerales en la maquinaria de elección shanghai joyal, la gente utiliza decir bueno.

What is the correct installation of the roller crusher?

The roller crusher is a kind of ore crushing machinery, which is often used for the crushing ores in the gravel production line. The crushing ratio of the roller crusher is large and can be used for the crushing of many different ores. The roller Crusher is widely loved by the users. Shanghai Joyal mining machinery remind the majority of users If you want to play good on the roller crusher , first should have the correct installation of the roller crusher.Here joayl talks about the installation of roller crusher.

In the installation of the roller crusher when the user first need to draw the base line, the basis of the standard board to make a correct cross line, elevation line, the central target buried to achieve ease of use, and then began to install the base of the roller crusher, Find the base and tug of the installation location, leveling is positive, the first hole grouting, concrete to a certain strength, tighten the anchor bolts, review qualified, and then install the roller broken body.

The first roller will be mounted on the roller crusher body, the need to fix the concave connector to a positive and an anti-staggered configuration, and adjust the thickness of the horn, so that the contact between the roller and concave joints to maintain the corresponding gap, do not agree , And spot welding the joint head of the joint with the roller crusher body. Those are the installation method for the roller crusher, and there are some installation precautions as follows.



Install the pair of gears on the roller before the gear check the interface can not have a collision mark, the large gear and the roller crusher body contact surface clean, and then the two gears carefully and tighten the interface bolts, then large The gears are mounted on the roller crusher body, in this process to ensure that the roller crusher gear clean, can not damage the parts of the roller crusher.

After the large gear of the roller crusher is installed, the operator needs to adjust the large and small gear meshing parameters according to the installed large gears and meet the requirements of the equipment requirements, fixed pinion and reducer motor.

notes when ore crusher running

ore crusher is a key mine equipment which can not be lacking in the gravel production line. The ore crusher is mainly used for the crushing and processing of ore. The common ore crushing machinery are jaw crusher, Impact crusher  and hammer crusher and other ore crushing equipment, ore crusher is a large mining equipment. Here Shanghai joayl mining machinery share the notes when ore crusher running.

Some users may feel that as long as the ore crusher speed faster, then the yield will certainly be greater. So private to adjust the speed. This idea is wrong, in the design and production of ore crusher, manufacturers adjust the speed are carefully studied and calculated, both to ensure maximum production without causing serious damage to the equipment, Otherwise it will cause damage to the crusher.

Ore crusher is relatively large and the operation is relatively fast, in the process of running the ore crusher will not be very stable, there may be shaking. So the user is best to avoid direct physical contact. Because the ore crusher is in power  , so the user can not directly touch the ore crusher. must be not direct repair ore crusher when ore crusher not stop working.

shanghai joyal sand making plant

a brief introdction of shanghai joyal Sand making plant
Technical advantages: we have designed a full set of sand production lines, in the industry's leading position.
Production process: stone by the vibration feeder evenly sent to the jaw crusher for rough, rough after the material into the jaw crusher to break again.
Components: vibration feeder, jaw crusher, sand making machine, vibrating screen, sand washing machine, Rubber Belt Conveyor, centralized electronic control and other equipment.


working principle of shanghai joyal sand making plant

First, the stone is crushed by the coarse crusher, and then the resulting coarse material is conveyed by the tape conveyor to the crusher for further crushing. The finely divided stone enters the vibrating screen to separate the two stones to satisfy the sand The size of the stone into the sand machine sand, the other part of the material into the fine break into the sand into a part of the sand made of sand, the sand washing machine (optional) after cleaning into finished sand, the other part into the sand machine again broken.


Performance characteristics of shanghai joyal sand making plant 

1. High degree of automation
The sand production line has a high degree of automation and low running cost.

2. Artificial sand gradation is better
Artificial sand inside the mud powder can be removed through the separator to achieve the standard building sand, and the separator can also control the artificial sand in the stone powder content, so that within the provisions of the state, thereby enhancing the compression of concrete Strength and workability of concrete.

3. Product grain is good
To produce the system sand in line with national standards for building sand, uniform size, grain shape is good, supporting reasonable.
Broken rate is high

4. High broken rate, energy saving, large output, less pollution.

Through this article, you can know our Shanghai Joyal's sand making plant , if you want to get more information, please contact our company's Web site customer service.

What are the processing equipment for limestone ？

Introduction to limestone

Limestone is a common sedimentary rock, mainly calcite, gray, gray, yellow, light red and other colors, is burning lime, cement, one of the important raw materials, but also as iron, steelmaking flux , In metallurgy, building materials, construction, agriculture, chemicals, electronics and other industrial sectors are of great value. Its resources are widely distributed, mining prospects are extremely broad.

As the limestone is widely distributed, high value, so attracted a lot of investors eyes, its production and processing has become a hot industry projects. What is the equipment for the processing of limestone gravel? What is the process flow? Users are most concerned about the problem than this, this article will introduce the analysis.

 Limestone processing equipment

1, jaw crusher

Jaw crusher is the key equipment for the initial crushing of limestone crushed stone. It is composed of jaw plate and frame as the main components. It has the advantages of simple structure, convenient operation, high efficiency, good effect, good quality, excellent quality, Low cost and other characteristics, is the ideal choice for the initial processing of limestone, much user recognition.

2, impact crusher

In addition, the design of the equipment into a lot of innovative technology concept, so that it is not only beautiful appearance, small size, but also a large number of small and medium-sized, High yield, but also has a high degree of automation, flexible operation, low noise, less pollution and other characteristics, is a very good broken equipment.

3, sand making machine

Sand is the limestone processing process in the most status of the equipment, its value is naturally can not be ignored, can be crushed in the gravel made of high quality finished sand, while the size can be freely adjusted according to need, its own flexible operation, High yield, low consumption of environmental protection, and the production of finished sand quality, grade reasonable, uniform size, is the best sand equipment.

4, other equipment

In addition, the limestone processing line will also use the vibration feeder, circular vibrating screen, belt conveyor and other equipment, if necessary, will also use sand washing machine, dryer, customers can choose according to production needs, detailed equipment, You can click on the online consultation to understand.