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Hot Sale Hammer Crusher In Zimbabwe Stone HammerMill

Hot Sale Hammer Crusher In Zimbabwe Stone HammerMill

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A complete feed pellet plant from raw material processing to final pellet packing can be divided into the following three parts Feed Materials Handling System Feed hammer mill is used for crushing the materials such as corn wheat and other grains into powder with the diameter of 3-5mm which is suitable for being processed by pelletizing machine Get price

Used Hammer Mills and Bowl Mills | Wabash Power Equipment

Used Hammer Mills and Bowl Mills | Wabash Power Equipment

This is a 3 HP 220V electric direct driven hammer mill. -This hammer mill has both a grinding and a shredding function. -Shredding of any dry or green product such as corn,maize,sugar cane,branches and any kind of green crop used for animal feed.-This hammer mill comes standard with 5 siev es(0.8mm;3mm;5mm;12mm and 25mm) for grinding any wet or dry product.-These mills are suitable

Replacement wear parts for hammer mills and shredders including hammers screens discs and cutter teeth wear plates bearings and more request a quote Customized mn13cr2 manganese hammer crusher spare parts for stone crusher manganese steel hammers as the most important spare part for hammer crushers been widely used in mining industry cement plant power Customized mn13cr2 manganese hammer crusher spare parts for stone crusher manganese steel hammers as the most important spare part for hammer crushers been widely used in mining industry cement plant power

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Hammer Mill - Shanghai Zenith Company

Hammer Mill - Shanghai Zenith Company

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Plate IV.7 Manik hammer mill Manik grinding mills are especially useful for grinding maize. The mills are manufactured in 4 sizes. The hammers are reversible, and can be used on 4 different faces before replacement. Output: 90 to 1,100 kg per hourPower required: 8 to 60 hpPrices: US$370 to US$690 Manufactured by: Manik Engineers (Tanzania) Source: Commonwealth Secretariat (1981) Plate IV.8 Ndume power-driven hammer mill The Ndume hammer mills are especially suitable for grinding maize into meal. There are 5 models: the ND20, ND30 and GM40. The hammers are reversible and replaceable. From the mill housing, a fan blows the meal up into an overhead screened hopper. The ND20 has the lowest capacity and can be driven from small power sources of 12-25 hp. The ND30 has double the capacity of the ND20, and is fitted with a special overhead screen which allows oversize meal particles to fall back into the mill for regrinding. The ND30 can be driven from small power sources of 16 hp. The GM40 is specially designed for power take-off from tractors. Outputs: 200 kg to 950 kg per hourPrices: US$690 to US$1,300 Manufactured by: Ndume Ltd. (Kenya) Source: Commonwealth Secretariat (1981) The capacities of electric motors used in stone mills vary between 0.4 kW and 15 kW according to mill capacity and the diameter of the millstones. The motor capacity governs, in turn, the speed of rotation of the millstones within an optimum range of 600 to 800 rpm. The smaller diameter stones rotate faster than those of larger diameter. Thus, in a typical horizontal mill, the optimum rotation speed may be reduced to 400 or 500 rpm for stone diameters exceeding 61 cm. The output of ground material depends upon the capacity of the motor, the speed of rotation, the diameter of the millstones, the variety of the grain and the desired fineness of the ground material. The average output of a vertical stone mill is 80 kg per kW per hour, while it may reach 107 kg per kW per hour in a horizontal mill equipped with large diameter stones. Thus, the average hourly output of stone mills varies between 33 kg and 1,600 kg per hour, depending on the motor capacity, the position (vertical or horizontal) and diameter of the millstones, the type of grain and the required fineness of the ground material. Millstones are made out of one of the following materials: - natural stones; - small pieces of natural stones embedded in a matrix of cement or other suitable material. Other ingredients, such as emery, may also be added in the matrix; and - artificial stones made of emery or carborundum, or a mixture of the above two materials embedded in a matrix of magnesium oxychloride cement. The carborundum may additionally be heat-treated or vitrified to increase its durability. All types of millstones are usually enclosed within a supporting and protecting metal band. They are grooved to allow the shearing of the grain, as well as to assist the movement of the latter to the stones' periphery. The casing of most stone mills is made out of cast iron although some models are made with a wooden frame. A large number of developing countries manufacture stone mills for local use or for export to neighbouring countries. In many cases, the motor of these mills is imported. Plates IV.9 to IV.14 illustrate various types of stone mills manufactured in developed and developing countries, while table IV.4 provides the characteristics of a selected number of mills. IV.4 Efficiency of plate, hammer and stone mills A comparison of the efficiency of the plate, hammer and stone mills shows that hammer mills are generally better suited than plate or stone mills for fine grinding. A plate mill generally consumes more power than a hammer mill during fine grinding, especially with grain at high initial moisture content. Plate mills would therefore seem to be more expensive to operate. A more efficient use of plate mills requires that the grain be pounded before milling: this is unnecessary with the hammer mill. Cyclones fitted to the large hammer mills cool the mill parts and the ground material. Their provision in plate mills or stone mills is unusual. However, as an increase in the temperature of ground maize may impair its nutritional characteristics and shelf-life, manufacturers of stone mills recommend an optimum rotation speed of the millstones which should not be exceeded by more than 25 per cent. IV.5 Maintenance of plate, hammer and stone mills All types of mechanical grinders require regular maintenance if they are to perform the grinding operation efficiently at all times. All moving parts require lubrication on a regular basis (e.g. weekly). Most hammers, plates and millstones are reversible. Thus, they may be used for an extended period of time before sharpening, regrinding, dressing or replacement is necessary. Generally, the hammers need to be resharpened each week while the plates require regrinding every three to four weeks. Where excessive wear has taken place on some types of steel hammers, the tips can be returned to approximately their original dimensions by welding further metal. Using the correct materials, the new part may be made harder and thus more durable than the original. Natural stones wear more quickly than artificial stones and therefore need to be reversed or replaced more regularly. They are, however, cheaper to purchase. It should be emphasised that the life of the milling parts, whether hammers, plates or stones, will be prolonged if foreign matter of mineral origin (e.g. fragments of stone or metal or sand) are removed from the grain prior to milling. Table IV.4 Characteristics of selected stone mills produced by manufacturers listed in Appendix I1 Manufacturer Model Millstones Use/maintenance Power (hp) Rotation (rpm) Suggested engine2 Output (kg/hr)3 Material Diameter (mm) ABC HANSEN CO. DIAMANT Artificial stone 250-550 1 E or D6 to 30 FARMERS'FAVORITE Artificial stone 600,700 10 425 E or D6 to 30 600 BENTALL 200 L090SUPERB Cast steel 267 5 600 D: 11 250 ETS CHAMPENOIS CLB Cast steel 260 Reversible 4-6 850 E: 4, H: 4-6 60-180 NOVA Cast steel 160 Reversible 2.5-3 500-600 E: 3, H: 3 30 DIAMANT H4 Corundum 500 Re-sharpen 3-4 550-600 120 DIAMANT H6 Corundum 700 Re-sharpen 6-7 240 V.300 Bakelite or metal 300260 Replaceable 5.5-7.5 600-700 E 280-400 V.400 Vit. cor. 400 Replaceable 5.5-7.5 500-600 E, D, P 280-400 Metal 390 JUNIOR Hard cast steel 95 Reversible 0.5-7.5 100-125 E, H 25 COMIA FAO BA 318 Vitrified corundum 300 Non-interchangeable 4-6 750 E: 4, H: 5-6D, P 80 MB 317 Vitrified corundum Non-interchangeable 5-6 900 E: 5.5, H: 6 200 ECLIPSE B30 Corundum 300 4-6 700-750 150-350 DANDEKARMACHINE WORKS DS style Natural stone 160 6-8 E 250 DDD PRESIDENT Nr. 4/5/6/7 Natural stone 3-20 100-1,200 Nr. 4/5 GM Natural stone 5.5-7.5 R. HUNT & CO PREMIER 1A Steel 254 Reversible 4 600 D: 7 150 PREMIER 2A Steel 305 Reversible 6 600 D: 11 200 IRUSWERKE B/3/4/5/6 210-600 1.5-10 E 50-500 RM/2/3/4/5/6 210-600 2-10 E 50-500 RK/2/3/4/5/6 210-600 2-7.5 E 40-200 CR2/3/4/5/6 210-600 2-10 E, D 40-250 MOULIS(CRICKET) D4 Corundum 200-400 Non-revers. 2 E, P 100-400 RENSON & Cie LE MODERNE Corundum 300 4-5 400-600 E: 7.5,P; D: 7.5-11 200-300 AVIMAT Cast steel 90 .5 E: 5 60-120 SILEX 113 Corundum 6-8 E: 4 350-600 A320 Steel 320 4 750 600-1,000 SACM MF 75 6-10 800-1,000 E, H 250 SAMAP P220/380(horiz. stones) Stone 200 Interchang. 4 2,800 E 80-100 SECA ARGOUD C300 Corundum 300 2-5 350 E: 3 250-400 l/h D400 Corundum 400 4-8 350 E: 5 150-200 l/h B205 Vit. corund. 200 3-4 350 E: 3/4 100 l/h SICO GAUBERT JUNIOR 170 Cor./emery 200 1-2 450 E 50-200 SENIOR 170 Cor./emery 300 3 450 E 150-400 SIMON FRERES N2GCV Metal 218 1.5 85-200 NGC 51 Metal 250 2-4 200-400 SKJOLD KKE 16 6 650 D 300-400 TIXIER FRERES REIXIT M9CV Vit. corund. 250 3 700-800 150 REIXIT M10CV Vit. corund. 250 3 700-800 150-180 REIXIT M11CV Vit. corund. 300 5 700-800 200-300 REIXIT M12CV Vit. corund. 300 5 700-800 200-300 YAMAR Corundum 400-500 Corundum 600-700 1 Source: GRET (1983) 2 Letters in this column designate the following engines: E for electric engines, D for diesel engines, H for heat engines, and P for petrol engines. The numbers designate the capacity of the engines in hp. 3 Output in kg/hr unless otherwise stated. Plate IV.9 Horizontal stone mill Output: 120-150 kg per hourPower required: 3-4 hp Manufactured by: Etablissements Champenois (France) Source: FAO (1979) Plate IV.10 Stone mill fitted with natural stones Stone diameter: 400 mmOutput: 225-270 kg per hourPower required: 6-8 hp Manufactured by: Dandekar Brothers (India) Source: ITDG (1976) Plate IV.11 Modern stone mill Equipped with agitator feed from 35 litres capacity hopper.300 mm diameter grinding wheelsScrew adjustment for fineness of grinding.Output: 200-300 kg per hourPower required: 4-5 hp Manufactured by: Renson and Co. (France) Source: ITDG (1976) Plate IV.12 Kisan stone mill Stone mill for various grainsPower required: 1 hp electric motor Manufactured by: Kisan Krishi Yantra Udyog (India) Source: FAO (1979) Plate IV.13 R 2 grinding mill - Vertical millstones: 210 mm diam.- Power required: 2 hp- Output of fine grist: 100 kg/hr Manufactured by: Iruswerke Dusslingen (Federal Republic of Germany) Source: ITDG (1976) Plate IV.14 Diamant vertical stone mill - Special composition millstones- Constant feed rate from hopper to give uniform grinding- Millstone diameter: 300 mm to 500 mm- Output: 100 kg to 650 kg per hour- Power required: 2 hp to 10 hp Manufactured by: A.B.C. Hansen Co. A/S (Denmark) Source: ITDG (1976)

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