Control systems for material treatment plant
AssigneeCoal Industry (Patents) Limited
InventorRodney W. O'Brian
Life of this patent
Estimating the term…
Abstract
A control system of particulate material treatment plant comprising screening means which produces undersize and oversize fractions and which is controllable to vary one size fraction relatively to the other size fraction, preparation or dense medium washer means producing a relatively low ash oversize fraction and a relatively high ash oversize fraction and two storage bunkers for the undersize fraction and for the relatively low ash oversize fraction, respectively, the control system comprising sensor means for sensing the amounts of particulate material in each of the two storage bunkers and for deriving signals indicative of the sensed amounts, control means receive the derived signals and control the operation of the screening means in accordance with the received signals.
Claims15
Material treatment plant comprising first material treatment means for producing a first treated fraction and a second treated fraction, operation of the first treatment means being controllable to vary one of the treated fractions relative to the other of the treated fractions, further material treatment means for further treating one of the said treated fractions produced by the first treatment means to produce a first further treated fraction and a second further treated fraction, separate storage means for the other of said treated fractions and for one of said further treated fractions, respectively, and a control system comprising sensor means for sensing the amounts of stored material in each of said separate storage means and for deriving signal means indicative of the sensed amounts of stored material, the control system further comprising control means for receiving said derived signal means and for controlling the operation of said first treatment means in accordance with the received signal means.
A control system for particulate material treatment plant comprising screening means for screening the particulate material into an undersize fraction and an oversize fraction, operation of the screening means being controllable to vary one size fraction relatively to the other size fraction, preparation means for treating the oversize fraction to produce a relatively low ash oversize fraction and a relatively high ash oversize fraction, and at least two storage bunkers for said undersize fraction and for said relatively low ash oversize fraction, respectively, the control system comprising sensor means for sensing the amounts of particulate material in each of the two storage bunkers and for deriving signals indicative of the sensed amounts of stored material, the control system further comprising control means for receiving said derived signals and for controlling the operation of the screening means in accordance with the received signals.
Particulate material treatment plant comprising screening means for screening the particulate material into an undersize fraction and an oversize fraction, operation of the screening means being controllable to vary one size fraction relatively to the other size fraction, preparation means for treating the oversize fraction to produce a relatively low ash oversize fraction and a relatively high ash oversize fraction, at least two storage bunkers for said undersize fraction and for said relatively low ash oversize fraction, respectively, and a control system comprising sensor means for sensing the amounts of particulate material in each of the two storage bunkers and for deriving signals indicative of the sensed amounts of stored material, the control system further comprising control means for receiving said derived signals and for controlling the operation of the screening means in accordance with the received signals.
Dependencies are inferred from the claim text.