Semi Autogenous Mill

Brief：

Semi autogenous mill is usually called SAG mill, which can replace some crushing and screening operations while grinding. It is a common equipment in modern concentrators, which can directly produce finished products or provide materials for the operation of the lower ball mill. The grinding medium (steel ball) of semi autogenous mill is 6-15%.

SINOMALY has rich experience in mill manufacturing, complete specifications and wide applications of semi autogenous mills, which can well meet the needs of various mineral processing.

The diameter of semi autogenous mill of SINOMALY ranges from 4.0m to 10.37m, and the maximum power is up to 12000kW. Our product R & D team is constantly improving the design of semi autogenous mill and optimizing the scheme according to the specific needs of customers, so as to provide more reliable, safe and efficient equipment.

Working Principle：

The material enters the cylinder from the center of the feed end cover. The motor drives the rotary part equipped with grinding medium (steel ball) and materials to rotate through the transmission device.

Proper grinding media (steel balls) and materials are loaded in the cylinder. Under the action of centrifugal force and friction, the grinding media and materials are lifted to a certain height with the rotation of the cylinder, and then thrown off at a certain linear speed.

The materials in the cylinder are crushed by the impact of steel balls (materials) and the additional crushing and grinding stripping between materials, between steel balls, and between steel balls (materials) and cylinder liner, fully exposing the fresh surface and fully mixing. Finally, the ground qualified materials are discharged from the mill through the discharge port of grid plate at the discharge end of the cylinder to complete the grinding process.

Technical data：

Main design features:

High quality cast end cover and solid welded cylinder greatly prolong the service life of the equipment.

The design of semi autogenous mill is supported by a complete set of analysis reports, including finite element analysis of rotating body, finite element analysis of oil film of main bearing, AGMA calculation of transmission gear, torque analysis of transmission system and EDEM discrete element analysis of liner.

The equipment has a more efficient and stable full hydrostatic lubrication system.

The equipment has a high degree of automation. It is equipped with PLC control system and one key start, which can monitor the operation status of the equipment in real time.

Main advantages：

After careful design, the semi autogenous mill of SINOMALY can stably provide higher output, safe, reliable, high quality and high efficiency. Our semi autogenous mill can achieve higher output at lower cost.

SINOMALY semi autogenous mill has complete specifications and is widely used. We provide semi autogenous mills with diameters ranging from 4.0m to 10.37m and maximum power up to 12000kW. You can easily find the specifications you need.

We also provide comprehensive customer service, including life-cycle solutions such as new equipment installation and commissioning guidance, equipment optimization and provision of spare parts.

Product features：

What you need is a flexible, durable, cost-effective semi autogenous mill tailored to your specific needs.

Therefore, we offer a complete range of products with diameters from 4.0m to 10.37m, and provide a variety of design configuration options to suit your needs:

Selection of various transmission forms: asynchronous / synchronous, single drive / double drive, edge drive / center drive / ring motor

Grinding mill head

Material: cast steel

Design standard: Sinomaly FEA

Segments: one, two, or four

Type: feed/discharge, fixed/floating, integral with the

trunnion/split with the trunnion

Grinding mill shell

Material: fabricated steel (welded)

Design standard: Sinomaly FEA

Sections: integral or two

Segments: one, two, or three-piece

Gears and pinions

Material: cast steel, forged steel

Design standard: AGMA 6014 for open gearing

Gears segments: two-piece or four-piece gears

Pinions segments: integral with the shaft/split with the shaft 

Grinding mill main bearings

Material: fabricated steel (welded)

Type: rolling or sliding, hydrostatic or hydrodynamic, fixed or floating

Design standard: Sinomaly FEA

Sliding bearings material: bronze or babbitt

Grinding mill trunnion liners

Material: cast iron, cast steel or fabricated steel

Wear material: vulcanized rubber lined or replaceable rubber lining

Type: feed or discharge

The movable feeding chute structure is more convenient and durable. Reliable feed sealing to solve the problem of material leakage at the feed inlet.

Provide self-return device or discharge cylinder screen.

SINOMALY Heavy Machinery Co., Ltd.

Company Profile

SINOMALY Heavy Machinery Co., Ltd. was founded in 2007. As an outstanding manufacturer and supplier of production facilities, equipment and service solutions to the cement, mining, metallurgical, chemical, coal, environmental protection, power plant and steel plant industries, we have never stopped improving productivity, driving down costs and reducing the environmental impact of operations.

Covering an area of 530mu, the Company is equipped with 80 medium and large equipment with an annual manufacturing capacity of 69,300 tons of products (totally in weight).

The Company is integrated with the study of basic theory, development & design of equipment, manufacturing of mechanical & electrical equipment, technical consultant services, and supply of spare parts.

With the CE certificate, SINOMALY has her products exported to many countries including the USA, Russia, Brazil, Saudi Arabia, Peru, Pakistan, Nigeria and Vietnam, etc., and positive feedback has been received from the customers.