Ball Mill Catalogue - 5.imimg

NSI EQUIPMENTS www.nsiequipment.com www.nsiequipments.com CYLINDRICAL BALL MILL

About Us NSI Equipments Pvt. Ltd. is a fast emerging company specializing in the design and manufacture of BALL MILL for industrial use for the past four decades. Over the years NSIE has consolidated its experience in its eld and has developed its expertise. Our endeavor is to supply well engineered product to the speci c need of our customers. Customer satisfaction is our paramount importance, which is the foundation to our business policy. We have excellent reputation for the quality of our product range as always endeavoring to advance technology, appropriate fabrication processes at all stages of manufacture. This has been possible with the active participation of our management, staff and workers. Everyone has contributed in his own manner and ultimately it is teamwork that has won. Vision NSI Equipments Pvt. Ltd. vision is to excel and provide technology that is the most advanced in Asia and at par with the international league. We believe every satis ed customer is an asset and we target to satisfy each and every customer walking in through our door. We envisage achieving these ambitious growth plans as Green Progress meaning attaining the goals in symbiosis with environment and it's an integral part of our corporate vision. Our credo is:Customer orientation to develop products (machines and auxiliaries) that seek to meet customer aspirations. An organization reputation that instills con dence in the customer to seek pre-purchase counseling, validation through trials and service needs that may arise. Mission NSI Equipments Pvt. Ltd. mission is to consolidate at the forefront of our Product Lines in Asia. We believe everything is possible with right efforts and dedication. We are con dent that we will achieve our goal by: Quality Policy “To be passive and proactive in providing quality product and solutions to clients by continuously striving to exceed their expectations” Our commitment to quality is un inching. Our desire for growth is deep rooted and our capacity for details is amazing. We adhere to national and international standards across all operations: from sourcing the raw materials & till it transfers to the nished machinery and nally successful commissioning. All our suppliers operate quality management standards as dictated by speci c markets. This measure undoubtedly re ects our royalty to quality assurance and our determination to provided the products and service our customers demand. What set us apart is the depth of our commitment and the high level of our concern to deliver quality products, ef cient services and total solutions. And this is where our quality improvement comes from. At NSIE, quality is a way of life. Customer Satisfaction Customer satisfaction is the foremost concern in our work culture. That is why a few of our products are very popular among users. We have met stringent delivery schedules and accepted challenges of precision manufacturing. We have extended our services to small scale and large-scale customers equally, and bagged repeat orders. NSI Equipments Pvt. Ltd. mission is to consolidate at the forefront of our Product Lines in Asia. We believe everything is possible with right efforts and dedication. We are con dent that we will achieve our goal by:

Cylindrical Ball Mill Type Cylindrical Single / Multi compartment with classi er and without classi er. Single / Multiple Compartments Cylindrical Ball Mill: Ball mill is an ef cient tool for grinding materials like ores, chemicals, ceramic raw materials, paints etc. into ne powder or ne paste by grinding in a wet way. The Ball Mill operates by rotating a cylinder with grinding balls like steel, CI, ceramic and pebble balls as grinding media. Material fed through the mill is crushed by impact and grounded by attrition between the balls and also the internal cascading effect reduces the material in to a ne powder. Ball Mills usually have liners inside which are replaceable when they wear. Liners will be of wave shape which key the ball charge in to the shelland prevent the slippage. The rotation of the powder mixer is usually between 4 to 20 revolutions per minute, depending upon the diameter of the mill. The larger the diameter is, the slower the rotation will be. Ball Mills are generally used to grind material ¼" and ner, down to the particle size of 20-75 microns. To achieve reasonable ef ciency, the ball mills are to be operated in a closed system, with oversize particles continuously being re-circulated back to the mill and to be reduced. Single compartment Mill is a conventional type of batch mill, consists of cylindrical steel shell with at steel ends welded to shell. Ball Mill rotates around a horizontal axis partially lled with raw materials to be ground plus the grinding medium. The material and the grinding medium are fed and discharged through an opening manhole on the cylinder shell. Ball Mills usually have replaceable liners inside and replaced when they wear out. Material fed through the mill is crushed by impact and grounded through attrition between the balls. Design Features: The horizontal cylinder of the ball mill, which is fabricated out of mild steel plates, is rotated using a side drive system at one end of the mill. The drive comprises of a girth gear, generally made from alloy steel casting, bolted onto the mill which is driven by its pinion, generally made out of alloy steel forging, through a gear reducer and motor coupled together. The two ends of the cylinder are covered with mill headers one placed at each end, the inlet and at the discharge. The mill headers have a central inlet and discharge opening from where the material enters the mill and exits the mill. These mill headers are generally made out of alloy steel casting. The mill headers are rested on fabricated trunions at both ends on which the headers rotate on a special selflubricating white metal lining. External lubrication system is also provided to keep the mill headers properly lubricated at all times. Other accessories include a set of low pressure and high pressure pumps which help to pre-jack the mill during startup.

Grinding Media: A ball mill is partly lled with steel balls (some are cylindrical shaped cylpebs) that impart a tumbling and cascading action when the mill rotates around its horizontal axis. Material fed through the mill is crushed by impact and ground by attrition between the balls. The grinding media are usually made of high-chromium steel or manganese steel. The smaller grades are generally cylpebs. Mill Liners: Conical Ball Mill The Conical Ball Mill is most ef cient when compare with cylindrical mill. Classi cation and circulation within the mill is the principle of operation for the conical mill. In a cylindrical mill most of the work is accomplished in only a portion of the mill cylinder length and the end corners are in effective. In conical ball mill it is maximum utilization. More over the structural advantage of a cone are well known. The truss is the strongest type of structure. The conical ball mill is built on this structurally sound principle. Minimum shell surface per unit of grinding volume, less liner weight and thereby reduced dead weight load of the mill, less bearing friction loss and over all power consumption, classi cation are added advantages. Conical Ball Mill a closed circuit system incorporate the classi cation system comprising the Rotary Classi er, Dynamic Classi er, Multi cyclone & Bag Filter. Closed Circuit Mill Mill liners are generally of high chromium steel or manganese steel. The liners are selected based on the type and hardness of the material to be ground. The grinding media is also selected with the same principal and suitable to the material of the liners. The thickness and design of the liners largely effect the grinding ef ciency of the mill and hence various improvements in the designs have been made from time to time.

The ef ciency of the early stages of grinding in a ball mill is much greater than that for formation of ultra- ne particles, so ball mills operate most ef ciently by making a coarse product, the ne fractions of this then are being separated, and the coarse part being returned to the mill inlet. The proportion of the mill-exit material returned to the inlet may vary from 10-30% when ordinary cement is being ground, to 85-95% for extremely ne cement products. It is important for system ef ciency that the minimum amount of material of nished-product neness is returned to the inlet. Modern separators are capable of making a very precise size "cut" and contribute signi cantly to the reduction of energy consumption, and have the additional advantage that they cool both the product and the returned material, thus minimizing overheating. Special Features: Ball mill can be provided in MS/SS/Alloy Material with or without rubber lining. Jacketed arrangement for heating or cooling applications. Custom – designed to suit your requirements. Stable performance and easy installation. Easy maintenance and operation. Counterbalance is directly opposite to man-hole opening. Heavy support stand is provided. Replaceable liners. (On request). Operational Advantages: Uniform quality throughout of the entire batch, batch after batch. Fineness accurately controlled by operating time, mechanical regulators being unnecessary. Ultimate neness is possible, less than 1 micron. No workman's attention required while Mills is running. No skilled help needed at any time. Combined grinding & mixing accomplished most ef ciently without loss of time. Equally suited for grinding both wet & dry products. Extremely low power consumption per unit of material. It can be easily cleaned. Continuous Ball Heavy duty, continuous type ball mill is with three compartment and screen. Replaceable Liners are xed inside entire mill. Liners material and shape is selected based on material to be grind. Input material is fed in two primary grinding compartments. Large diameter balls for reduce particle size are laying inside rst compartment. Material comes into second compartment for further grinding. Small size Balls are laying inside second compartment. Material comes into third for ne grinding. Smaller size media are laying inside third compartment for ne grinding. Diaphragms may place to regulate material level and control retention time. Material is feed and discharged through hollow trunnion at opposite end. Accessories like air classi er, cyclone, blower, return air circuit or dust collector can also be placed for close loop system. Girth gear is xed on shell, which driven mating gear, gearbox and motor, which are xed on heavy drive base. NSI Equipments Pvt. Ltd. Continuous Ball Mill is useful for grinding coarse feed to get ne powder in single continuous operation. It is for grinding Ceramics, Cement, Pencil, Paint, Chemical, Ink, Marble, Coal, minerals, Ferro Alloys etc.

Open Circuit Closed Circuit