大型半自磨机

Recleaner Water 1 2 3 Cleaner FLOTATION COLUMNS Height = 16m Diameter = 2.5m Minnovex spargers "Rain tray" wash water arrangement Concentrate
RECLEANERS CLEANERS
SAG/Auto Mills
Mill Aspect Ratio (D/L)
High (1.5-3)
Square (1/1)
Low (1/1.5 – 1/3)
瑞典AITIK 铜金银矿山
瑞典AITIK 铜金银矿山选矿流程
自磨+砾磨
澳大利亚世纪锌矿
澳大利亚世纪锌矿
Cyclones SAG Mill 36’ x 16’ (10” 2 clusters x 24) ROM Hopper
BALL FEEDER BALL MILL (2)
FILTER 35 Km PIPELINE TO BLAYNEY FALCON GRAVITY CONCENTRATOR Conc. SHIP TO SMELTER TRAIN TO PORT STOCKPILE 08-APR-2008 JD COARSE CLEANERS Au CONCENTRATE
Primary Sizer
Stockpile
Ball Mill 20’ x 32’
Flotation Screen (2.4m w * 6.1m l) Oversiz e to waste dump
PASMINCO CENTURY MINE Pb Rougher
Pb Scav. Tank Cells (4)Tank Cells (2)
Newcrest Mining Limited
LOW
CADIA VALLEY OPERATIONS
RECYCLE CRUSHERS STORAGE BIN COARSE ORE STOCKPILE CV002 WEIGHTOMETER PRIMARY CRUSHER BALL FEEDER LIME SILO
Impact Zone Toe Region
Attrition Zone
SAG/Auto Mills
自磨，半自磨
SAG/Auto Mills
Mill shapes
Conical ended mill
Flat ended mill
SAG/Auto Mills
Effective Grinding Length (EGL)
Lead Storage Tanks (1)
Cyclones (2” 20 clusters x 16)
Zinc Cleaner 3 Tank Cells (8)
Zinc Cleaner 5 Tank Cells (6) To Pipeline Zinc Storage Tanks (3)
Sand Grinders (15)
CV005 WEIGHTOMETER
RECYCLE CRUSHERS (2)
SCATS STOCKPILE
SAG MILL
BELT FEEDERS
CV003 WEIGHTOMETER
PROCESS WATER
TAIL THICKENER
SCAVENGERS X 2 LINES
ROUGHERS X 2 LINES CYCLONES CYCLONE FEED HOPPER
AG 02
Process water 15 l/s
09 Ball Mill
05 Ball Mill
Process water 10 l/s
09
NaCN 20 g/t
05
Primary Cyclones
AG 01
3.4% Cu, 8% Fe, 65% SiO2
Process water NaCN 25 g/t 15 l/s Line 2 Secondary Cyclones Line 1 Secondary Cyclones
COPPER CONCENTRATE
Final Concentrate Sampler
RECLEANERS
自磨半自磨机能耗高于球磨机 20%
破落破碎有效粒级： 研磨破碎有效粒级： 顽石累计粒级： 50-200 mm < 20 mm ~20-50 mm
Ball Drop Height Shoulder Region
REGRIND
01
NaCN 4 g/t
SIBX 10 g/t RETREATMENT
P/F to Final Tail Flotation Spillage Thickener U/F SIBX 50 g/t SIBX 30 g/t Retreatment Concentrate MIBC 15 g/t
FINAL CONCENTRATE Recleaner Concentrate Cleaner Concentrate To Copper Smelter Thickeners Grade :
25.0 % Copper 28.0 % Iron 9.0 % Silica
Column Concentrate
Conditioners (2)
Zinc Cleaner 2 Tank Cells (14)
Zinc Cleaner 4 Tank Cells (8)
Zinc Thickener
澳大利亚世纪锌矿
(S)AB 流程：
Flotation / leach
SAG mill
Ball mill
澳大源自文库亚世纪锌矿
SAG/Auto Mills
磨机参数
• • • • • •
www.jktech.com.au
Mill Dimensions 尺寸 Mill Speed 转速 Mill Load/Ball Load 充填率 Mill Power 功率 Ball Size 球径 Lifters 衬板
Delivering world class solutions to the minerals industry
Final Concentrate
Recovery : 94.8 % Cu
澳大利亚蒙特艾萨铜选厂SAB 磨矿回路
澳大利亚 Cadia 选矿厂，每天五万吨原矿处理量
head grades
- typical
Cu % Au g/t Ag g/t
0.2 0.8 0.8
1 1 1
半自磨机
Φ12 米 x 6.1米 20000 kW
PREFLOAT
LINE 2 ROUGHERS
LINE 2 SCAVENGERS
FLOTATION BANKS "Agitair" model 120 4 cells per bank 4 impellers per cell Volume of bank = 45.2 m 3 Pipsa Impellers 115 rpm
High filling
EGL 1
www.jktech.com.au Delivering EGL 2 world class solutions to the minerals industry
Low filling
SAG/Auto Mills
SAG Mill and Discharge Trommels
P/F to Final Tail SIBX 50 g/t SIBX NaCN 6 g/t Combined Rougher Concentrate 30 g/t MIBC 15 g/t Final Tailings 0.20% Cu, 5% Fe, 76% SiO 2
Dextrin 60 g/t
Silica Product 15 tph 78% SiO 2 Wash Water Column 3 Tailings COLUMNS Combined Scav. Conc. + Cleaner Tailings
Zinc Rougher Zinc Scavenger Tank Cells (7) Tank Cells (11)
Tailin gs Thick ener Cyclones (6” 2 clusters x 20) Lead Thickener
Tailings Dam
Prefloat Rougher Tank Cells (7)
700 tph P80 = 0.060 mm
球磨：6.7 MW
半自磨：12 MW
F80 = 80 mm
澳大利亚蒙特艾萨铜选厂
澳大利亚蒙特艾萨铜选厂
N
Line 2 Primary Cyclones Grinding Spillage Scat return Water jet 25 l/s BALL MILLS Rated Power 2750 kW Power Draw 2500 kW Size D=5m L=6m Speed 13.99rpm 70% Allis - Chalmers 65mm Balls 0.65 kg/t Line 1 PLANT FEED PLANT FEED Target Milling Rate 680 tph Scat return Water jet 25 l/s REGRIND CYCLONES 7 D10B Krebs cyclones in "cyclopak" arrangement 6 - 7 operating Bond Work Index 19 KWh/t Inlet diameter = 55 mm Vortex finder dia. = 76 mm Spigot dia. = 51 mm o Cone angle = 20 Regrind Mill Bypass Moisture 2.5 % Process water 12 l/s Process water 10 l/s PLANT FEED
MIBC 15 g/t MIBC 15 g/t SECONDARY CYCLONES 4 Krebs D26B cyclones in "cyclo-pak" arrangement Inlet Diameter = 133 mm Cone angle = 20o Vortex Finder dia. = 254 mm FLOTATION FEED Line 2 Line 1 Spigot dia = 152mm FULLY AUTOGENOUS MILLS Rated Power = 6600 KW Power Draw = 6400 KW Size D=9.75m L=4.42m Speed 10.69 rpm 78 % REGRIND MILL Rated Power 746 kW Power Draw 550 kW Size D=3.2m L=4.8m Speed 17.9rpm 76% 50mm Balls 0.1kg/t PREFLOAT LINE 1 ROUGHERS LINE 1 SCAVENGERS
Final Tail Sampler
CLEANER SCAVENGERS (6)
CLEANERS (4)
CYCLONE FEED PUMPS (2)
FLASH FLOTATION (2) DESLIME CIRCUIT 1 DESLIME COF TO RECLEANER REGRIND CIRCUIT
国外大型半自磨机的设计理念和比例放大规则
选矿工艺：
碎磨, 浮选， 磁选， 重选
碎矿
粗碎
中碎
细碎
球磨机
磨矿分级
磨矿分级
自磨机
自磨机磨矿原理
分级
新给矿
fi
破碎过程 返回料
排矿
pi
格子筛 高比能 低比能 矿浆
半自磨机磨矿原理
Shoulder Region
Ball Drop Height
Rock
Pb Cleaner 1 Tank cells (3)
Conditioner
Zinc Cleaner 1 Tank Cells (6) Conditio ner
Cyclones (6” 2 clusters x 20)
To Pipeline
Pb Cleaner 2 Tank cells (2)
Zinc Regrind (6)
MOUNT ISA MINES LTD COPPER CONCENTRATOR Grinding and Flotation Flowsheet From January 1998
Media and reagent usages given are with respect to the total plant feed