MILLCOM is widely used for the efficient operation and increased production of various types of grinding machines; from small ball mills for fine ceramics to huge grinders for cement industry. Maximum grinding efficiency can be automatically maintained by installing ball mills and other mills with microphones (Electronic Ears) for the automatic control of raw material feed rates. In abnormalities, emergency interruption of raw material feeding is possible. OPERATOR’S EARS - Determination of raw material input flow rate
- Detection of abnormal operations
AUTOMATIC CONTROL SYSTEM - Automatic control of raw material input flow rate
- Automatic detection of abnormal operations
- Operators are required to watch the changes in raw material characteristics at all times, and adjust manually the setting points of controllers.
MILLICOM - Automatic selection of optimum setting point of Micon-line for the raw material characteristics
- Automatic control of raw material input flow rate
- Automatic detection of abnormal operations
- Realization of complete automation, increased production, reduced energy and manpower requirements, and also improved and stabilized quality.
- Reliable detection of load variations: The loading conditions in the grinder interior, such as under-loading, over-loading, etc. are detected and alarm is sounded when abnormal operation in detected. By the alarm, the raw material input flow rate is controlled manually. The simplest model available for this function is Model S.
- Early and dependable detection of abnormal operations: Such abnormal operations as clogging, coated grinding balls, etc. are detected for emergency stop of raw material input flow. The simplest model available for this function is Model S.
- Increased Production: The optimum raw material input flow changes depending on the grains, grindability, temperature, etc. of the raw material. Micon-line, housing a micro-computer, controls automatically and constantly to keep the optimum raw material input flow rate. This realizes increased production. The simplest model available for this function is model SM.
- Reduced energy requirement: Along with an increased production, as shown in the photographs on next page, the bucket elevator power consumption and the flow rate of return powder from the separator are established. This makes it possible to save the energy requirement of the grinder and the grinding system as a whole. The simplest model available for this function is Model SM or Model SFM.
- Improved and stabilized product quality: Because the grinding system load is kept at the optimum value, the product grain variations are minimized, thus realized stabilized product quality. The simplest model available for this function is Model SM is Model SFM.
- Complete operator-less operation: Raw material input flow rate is automatically maintained at the optimum value, and various alarms are sounded and displayed, which realizes complete operator-less operation. This function is available for models above model SM.
| COMPONENTS |
SYMBOL |
WIRING |
SIGNAL GENERATION |
APPLICATIONS |
| Sensor |
Microphone |
S |
100V, 50/60Hz, 15VA |
Hi-Lo |
Detection of grinding sound from the grounder. |
| So |
Exclusive-purpose cable (2-core, shielded) between microphone proper and audio signal converter, Maximum distance 300m, Power source 100V, 50/60Hz, 15VA, 2-core cable |
Transistor output for Hi-Lo alarm (setting optional) |
Detection of Noise from the surrounding of grinder. |
| Wattmeter |
P |
Connection of wattmeter and CT with 2-core cable, and wattmeter and PT with 3-core cable, as nearer as possible. Power source 100V, 50/60Hz, 1.5VA, 2-core cable |
4~20mA DC |
Detection of power consumption of bucket elevator at the grinder discharge side. |
| Impactline Flow Meter |
F |
Exclusive-purpose cable (8-core, shielded) between transmitter and preamplifier, Maximum distance 150m, Power source 100V, 50/60Hz, 25VA, 2-core cable. |
4~20mA DC |
Detection of flow rate of return powder from separator. |
| Controller |
Micon-Line |
M |
Two cables (1.25 mm2) for each input signal point. Connection with constant feed weigher by means of 2-core cable. Maximum distance respectably 300m. Power source 100V, 50/60Hz, 25VA, 2-core cable |
One point for control signal output (4~20mA DC). Four points for transistor output (Hi-Lo) for alarm display. Display of calculated result of input signals (4-digit display), setting point values (4-digit display) at two points, and control signal output (analog) at one point. |
Output signals from the various detecting points are used as input signals to the Micon-line so as to maintain the maximum production rate of grinder by selecting automatically the setting point of Micon-line. And Micon-line gives out operation signal to the constant feed weigher for material and the alarms. |
| Actuator |
Constant Feeder of Raw Materials |
B |
- |
- |
In proportion to the operation signal of Micon-line, the constant feed weigher feeds material into the grinder. The existing feeder can be applied when it has the same flow control mechanism. |
| Others |
Recorder |
Re |
- |
- |
During the test operation, a recorder is required for the output signals from various detecting points and Micon-line. When this recorder is installed permanently, it can record various operating conditions, and give data for rationalization of operation. |
| Turbo Powsizer |
TP |
- |
- |
Particle sizes up to 3 µm of the finished product can be automatically controlled. Production can be increased when MILLCOM is used in combination with Turbo Powsizer. |
| Model |
Disorder Alarm |
Monitoring and Measuring |
Raw Material Charging |
Effect |
Application |
| Model S |
Disorderly conditions of grinder |
Load in grinder |
Manual |
Optimum load operation of grinder Disorder alarm and prevention of trouble |
Disorder detection and optimum operating condition of small ball mills for fine ceramics up to large mills. |
| Model SM |
Disorderly conditions of grinderr |
Load in grinder |
Automatic Optimum control |
Optimum loading and stable operation of grinder Increased production, power saving and manpower saving Increased stabilization of product fineness Disorder alarm and trouble prevention |
Applicable from small ball mills to large raw mill and finishing mill for cement industry, regular automatic operation, detection of disorder, and prevention of troubles. |
| Model SSPM |
Disorder at first compartment Disorder at second compartment Disorder at bucket elevator |
Load in first and second compartments Bucket elevator power consumption (discharge flow rate of grinder) |
Automatic Optimum control |
High grade automatic operation of various types of ball mills. |
| Model SFM |
Disorder at first compartment Disorder at return powder |
Load in first compartment Return powder flow rate |
Automatic Optimum control |
Better loading and stabilized operation of grinder Better stabilization of bucket elevator power consumption and return power flowrate Increased production, power saving and man-power saving Increased stabilization of product fineness. Disorder alarm and trouble prevention Better results are expected from Model SSPFM than Model SSFM |
| Model SSPFM |
Disorder at first compartment Disorder at second compartment Disorder at bucket elevator Disorder at return powder |
Load in first and second compartments Bucket elevator power consumption (discharge flow rate of grinder) Return powder flow rate |
Automatic Optimum control |
MILLICOM is widely used for:
- Energy Reduction,
- Saving Labor,
- Improving quality,
- Improving production,
- Complete Automation
- Trouble Detection and
- Alarming clogging at all, in various types of grinding machines; from small ball mills for fine ceramics to huge grinders for cement industry.
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Electronic Ear(Electronic Ear)