What raw materials can Ruitu bromine extraction systems process?

Our bromine extraction systems are designed for seawater, bitter brine, salt lake brine, oilfield water, bromine-bearing industrial wastewater and concentrated brine from desalination plants. The process route is selected only after we review a laboratory analysis of your feed.

Do you supply single machines or complete plants?

Both. We supply individual machines such as salt washers, roller crushers, dryers, vibrating screens, belt conveyors and hot air furnaces, and we also deliver complete turnkey lines under an EPC contract.

What is included in your EPC service?

Water quality testing, site selection support, process design, project launch preparation, equipment manufacturing and procurement, packing and shipping, installation and commissioning, operator training, finished product production guidance, and output buy-back or decommissioning support where agreed.

Can your salt washing equipment produce food-grade salt?

Our salt washing machinery is used for both food-grade and chemical-grade salt. The achievable grade depends on the crude salt composition and the standard that applies in your market, so we design the washing, crushing, drying and screening stages around your target specification.

How do you support overseas installation?

Our engineers can be dispatched to site for installation and commissioning, train your operators, and stay involved until the line produces finished product at the designed daily capacity.

How do I start a project with Ruitu?

Send us your raw material analysis, target daily capacity, product specification and site information by email or phone. Our technicians will prepare a preliminary budget estimate and an economic benefit analysis based on your budget and expected output.

China Professional Salt Drying Machinery Products, Service

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China Professional Salt Drying Machinery Products, Service

Brand: Ruitu Automation

Product origin: China

Categories: Salt Washing Machinery

Application: It can be used in the drying and cooling sections of salt washing factories. It is also suitable for products with large or irregular particles that are not easy to flow, and for products that require maintaining particle integrity and have a low fluidization speed requirement.

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Product Description

Technical Characteristics

The drying section for salt washing includes a centrifugal dehydrator, an air heater, and a vibrating fluidized drying bed. The entire section features high drying efficiency, uniform moisture content, and is particularly energy-efficient, making it suitable for the production of both food-grade and industrial-grade washed salt.

Salt Drying Section: The Final Key to High-Quality Washed Salt

After cleaning and crushing, washed salt particles still contain a large amount of moisture (typically 8% - 10% water content). Excessive moisture can lead to clumping, mold growth, and difficulties in storage, transportation, and packaging - directly affecting the final product quality and market competitiveness. Our specially designed salt drying section for washed salt consists of a centrifugal dehydrator, a hot air furnace, and a vibrating fluidized drying bed, achieving efficient dehydration, uniform drying, and low energy consumption. It addresses the pain points of uneven drying, high energy consumption, salt clumping, and excessive moisture residue, ensuring that the final salt product meets customer quality standards. The entire drying system is seamlessly integrated with the preceding salt washing line, ensuring the purity and quality of the washed salt.

Centrifugal Dehydration (Centrifuge Dewater) - Pre-Dehydration: The washed and crushed salt particles (0.1 - 0.5 mm) are first sent to the centrifugal dehydrator. Through high-speed centrifugal force, most of the free water on the surface of the salt particles is removed, reducing the water content from 8 - 10% to 3 - 4%. This step saves energy and shortens the drying time.

Air Heater

Hot air is provided by the hot air furnace. When the centrifugal dewatering machine is in operation, the air heater heats the ambient air to 80 - 120℃ (adjustable according to the moisture content) and then delivers the clean hot air to the vibrating fluid bed dryer through the air supply system.

There are three common types of hot air furnaces:

Natural gas hot air furnace: A clean energy source with low emissions and rapid heating. It is suitable for areas with convenient natural gas supply, energy-saving and environmentally friendly, and reduces operational pollution.
Coal-fired hot air furnace: Cost-effective with an abundant fuel supply. It has a strong heat output and is suitable for large-scale salt production. It is easy to maintain and has low operating costs.
Diesel hot air furnace: Flexible and portable without the need for fixed fuel pipelines. It ignites quickly and provides stable heat, making it suitable for remote areas or temporary production sites.

Screening and packaging machinery. Multi-level vibrating screen for refined salt, automatic packaging machine for refined salt

Vibrating Fluid Bed Dryer

The vibrating fluidized bed dryer is composed of a material system, an air intake filtration system, a heating and cooling system, a main unit, a separation and dust removal system, a discharge system, an exhaust system, and a control system, etc.

During operation, the material is fed into the drying chamber by the material feeder. In the drying chamber, the material meets hot and cold air, forming a fluidized state, and heat transfer occurs, completing the drying and cooling process.

A small amount of fine powder of the material is carried by the air and enters the cyclone separator. Under the action of centrifugal force, the material settles along the wall of the cylinder and is separated. The trace amount of fine powder not separated by the cyclone separator enters the water mist dust collector, where it is captured and recovered, and the wet air is discharged.

Control system: It automatically regulates and controls by detecting the pressure at the air intake and exhaust ports and the temperature at the temperature measurement points.

Technological Process

Product Features

The drying system adopts a two-stage separation and dust removal process with a cyclone separator and a water mist dust collector, achieving high powder recovery rate and effectively reducing material loss. The main unit is equipped with quick-opening holes and drain ball valves of sanitary grade, facilitating cleaning and maintenance. The main unit has undergone structural improvements, featuring a long service life, low vibration, low noise, and uniform material distribution.
The fluidization is even, without dead corners or blow-through phenomena, ensuring uniform drying and cooling products. The parts in contact with the material are made of stainless steel and undergo acid washing and passivation treatment, with a smooth structure.
The upper and lower bed bodies of the drying main unit are insulated, providing good insulation effect and minimizing heat loss of the equipment.
The main bed plate is rigid and has a reasonable opening rate, effectively avoiding the problem of material leakage.
The exhaust air pipeline is designed with variable diameters at certain sections according to different air volumes to ensure that fine powder does not accumulate.
The entire system operates under slight negative pressure and is fully enclosed, preventing dust from flying and maintaining a clean working environment.

Technical Specification

Model	Body Dimension (mm)		Overall Shape Dimension (mm)			Vibration Motor Power (kW)	Weight (kg)	Water Evaporation Capacity (kg/h)
Model	Width	Length	Length	Width	Height	Vibration Motor Power (kW)	Weight (kg)	Water Evaporation Capacity (kg/h)
ZLG3x0.30	300	3000	3505	1830	890	0.37X2	1240	30-50
ZLG3x0.45	300	4500	5005	1830	1116	0.75X2	1570	45-70
ZLG6x0.45	600	4500	5005	1940	1286	1.1X2	1967	90-150
ZLG6x0.60	600	6000	6510	1940	1286	1.1X2	2743	120-200
ZLG6x0.75	600	7500	8010	1940	1286	1.1X2	2886	150-250
ZLG9x0.60	900	6000	6510	2110	1830	2.2X2	3540	180-300
ZLG9x0.75	900	7500	8010	2110	1830	2.2X2	4219	220-370
ZLG12x0.75	1200	7500	8010	2450	2400	3X2	5223	300-500
ZLG15x0.75	1500	7500	8010	2570	2850	4X2	6426	370-620
ZLG18x0.80	1800	8000	8520	3100	3250	5.5X2	8600	450-700

Frequently Asked Questions (FAQ)

What is the moisture reduction range achieved by the centrifuge dewaterer?

The centrifugal dehydrator efficiently removes the surface free moisture from washed salt particles (0.1 - 0.5 mm), reducing initial water content from 8% - 10% down to approximately 3% - 4%, which greatly saves energy during subsequent thermal drying.

What types of fuel can be used for the air heating furnace?

Three main heating sources are supported depending on local utility availability: Natural gas furnaces (clean emissions and fast heating), Coal-fired furnaces (cost-effective for bulk production), and Diesel furnaces (portable and ideal for remote areas).

How does the vibrating fluid bed dryer ensure uniform drying?

By combining mechanical vibration with regulated clean hot air, the salt particles reach a continuous fluidized state without dead zones or blow-through phenomena, resulting in consistent heat transfer and moisture removal.

How does the system prevent dust emissions and salt material loss?

The system operates completely enclosed under slight negative pressure. It uses a two-stage dust removal configuration: a primary cyclone separator recovers settled salt fine powder, followed by a secondary water mist dust collector to trap residual particles.

What materials are used to ensure the durability and food safety of the equipment?

All machine parts in direct contact with the salt product are constructed from sanitary-grade stainless steel subjected to acid washing and passivation treatment to guarantee corrosion resistance and product purity.