भाषा चयन गर्नुहोस्:
को STET विभाजक एक समानान्तर प्लेट electrostatic विभाजक छ, तथापि, सबैभन्दा समानान्तर प्लेट विभाजकों मा मामला छ रूपमा ठाडो गर्न विरोध रूपमा इलेक्ट्रोड प्लेट तेर्सो उन्मुख छन्. यसबाहेक, the STET separator accomplishes the particle tribo-charging and conveying simultaneously by a high-speed open mesh conveyor belt. This feature allows for both a very high specific processing rate of feed, as well as the capability to process powders much finer than conventional electrostatic devices. The mineral separator machinery has been in commercial operation since 1995 separating unburned carbon from fly ash minerals (typical D50 approximately 20 μm) in coal-fired power plants. This electrostatic separation machine has also been successful at beneficiating other inorganic materials, including minerals such as calcium carbonate, पाउडर, barite, and others. The STET separator has also been successfully applied to processing agricultural materials such as oilseed meals and pulses, animal meals, and rendering products.
The fundamental details of the STET separator are illustrated below. The particles are charged by the triboelectric effect through particle-to-particle collisions within the gap between the electrodes. The applied voltage between the electrodes is between ±4 and ±10 kV relative to ground, giving a total voltage difference of 8 - 20 nominally को एक धेरै संकीर्ण इलेक्ट्रोड खाली मार्फत केभी 1.5 सेमी (0.6 इन्च). फिड कणहरु तीन स्थानहरु मध्ये एक मा STET विभाजक परिचय (फिड पोर्ट). को STET विभाजक मात्र दुई उत्पादनहरु उत्पादन, एक नकारात्मक चार्ज कण धारा को सकारात्मक चार्ज इलेक्ट्रोड मा संकलित, र एक सकारात्मक चार्ज कण धारा को नकारात्मक चार्ज इलेक्ट्रोड मा संकलित. The products are conveyed to the respective hoppers at each end of the STET separator by the separator belt, and fall out of the separator by gravity. The STET separator does not produce a middlings or recycle stream, although multiple pass configurations to improve product purity and/or recovery are possible.
Particles are conveyed through the electrode gap (अलग क्षेत्र) by a continuous loop, open mesh belt. The belt operates at high speed. बेल्ट को ज्यामिति को इलेक्ट्रोड को सतह बन्द ठीक कणहरु झाडू गर्न गर्दछ, preventing the accumulation of fine particles that degrades the performance and voltage field of traditional free fall parallel plate type separation devices. साथै, बेल्ट एक उच्च सरासर उत्पन्न, दुई इलेक्ट्रोड बीच उच्च अशांति क्षेत्र, tribo-चार्ज प्रचार. को विभाजक बेल्ट को काउन्टर-वर्तमान यात्रा को विभाजक भित्र लगातार चार्ज र पुन: चार्ज वा कणहरु लागि अनुमति दिन्छ, को STET विभाजक को अपस्ट्रिम एक पूर्व-चार्ज सिस्टम लागि आवश्यकतालाई हटाइ. को STET विभाजक एक उच्च फिड दर छ, व्यावसायिक सिद्ध प्रक्रिया सिस्टम. को STET विभाजक अधिकतम प्रक्रिया क्षमता ज्यादातर को volumetric फिड दर STET विभाजक बेल्ट द्वारा इलेक्ट्रोड खाली मार्फत प्रवाह गर्न सकिन्छ कि एक समारोह छ. अन्य चर, यस्तो बेल्ट को गति रूपमा, को इलेक्ट्रोड र पाउडर को aerated घनत्व बीच दूरी अधिकतम फिड दर प्रभावित, सामान्यतया एक कम हदसम्म. For relatively high density materials, for example fly ash, एक अधिकतम प्रक्रिया दर 42 इन्च (106 सेमी) इलेक्ट्रोड चौडाई व्यावसायिक अलग एकाइ लगभग छ 40 - 45 प्रति फिड को घण्टा टन. कम बाक्लो फिड सामाग्री को लागि, अधिकतम फिड दर कम छ.
| Feed Material | Approximate Compacted Bulk Density | Approximate STET 42 Inch Separator Maximum Feed Rate |
|---|---|---|
| फ्लाई ऐश | 60 - 80 pound/ft 3 (1000 –1300 kg/m3) | 40 - 45 Ton per hour |
| पाउडर | 30 - 40 pounds/ft 3 (500 - 600 kg/m3) | 15 - 20 Ton per hour |
| Wheat Flour | 30 - 40 pounds/ft 3 (500 - 600 kg/m3) | 15 - 20 Ton per hour |
The STET separator provides end users with adjustable control of product quality and can be integrated into existing process flowsheets. साथै, the STET separator has multiple automation options:
STET currently offers two sizes of the STET separator:
This machine is approximately 9.1 मीटर (29 खुट्टा, 11 ¾ inches) लामो; 1.7 मीटर(5 खुट्टा, 7 इन्च) विस्तृत; 3.2 मीटर (8 खुट्टा 1 7/8 इन्च) उच्च. The compactness of the system allows for flexibility in installation designs and processes up to 40 tonnes per hour for fly ash.
शक्ति खपत बारेमा छ 1 kilowatt-hour per tonne of material processed, with most of the power consumed by the two 50 HP (37 kW) motors that drive the belt.
This machine is approximately 9.1 मीटर (29 खुट्टा, 11 ¾ inches) लामो; 1.2 मीटर(4 खुट्टा 1 इन्च) विस्तृत; 3.2 मीटर (8 खुट्टा 1 7/8 इन्च) उच्च, making it 18” narrower than or 42” model, and is able to process up to 23 feed tons per hour.
शक्ति खपत बारेमा छ 1 kilowatt-hour per tonne of material processed, with most of the power consumed by the two 30 HP (22KW) motors that drive the belt.
