Title:
COMPUTING METHOD FOR OPTIMUM TARGET TOTAL QUANTITY OF ELECTRICITY SUPPLY FOR ELECTRIC FURNACE AND ELECTRIC FURNACE INSTALLATION
Document Type and Number:
Japanese Patent JP3645306
Kind Code:
B2
Abstract:
PURPOSE: To determine the optimum target total quantity of electricity supply to be supplied to an electric furnace neither too much nor too less and prevent occurrence of abnormal consumption of refractories by employing a specified way regarding a method to compute and determine the optimum target total quantity of electricity supply for an electric furnace in which a plurality of types of raw materials are set and melted.
CONSTITUTION: A method is employed in which multiplication of the weight of a raw material and a coefficient previously determined corresponding to an operation pattern of an electric furnace 1 is carried out for every kind of raw materials (e.g. ferrous scraps, coal) and the total of the multiplication results for all kinds of the raw materials to be set is calculates as the optimum target total quantity of electricity supply. That is, an electric furnace installation mainly consists of an electric furnace 1, a voltage adjusting means 8, a voltage measuring means 10, a current measuring means 11, a measuring means 12, a computing means 13, a compensating means, an adjusting means 16, a detecting means 17, and a controlling means 15. The computing means 13 previously computes a planed optimum target total quantity of electricity supply to be supplied to electrodes 4 and an electric power supplying pattern and the controlling means 15 sends to a current set value to an elevating means 5 of the electrodes 4 based on the signals from the computing means 13.
Inventors:
Hiroyuki Chiba
Application Number:
JP7673995A
Publication Date:
May 11, 2005
Filing Date:
March 31, 1995
Export Citation:
Assignee:
Nisshin Steel Co., Ltd.
International Classes:
H05B7/144; F27B3/28; F27D19/00; H05B7/20; (IPC1-7): H05B7/144; F27B3/28; F27D19/00; H05B7/20
Domestic Patent References:
| JP4064156B2 | ||||
| JP4082524U | ||||
| JP4823572B1 | ||||
| JP5014370B1 | ||||
| JP5292938A | ||||
| JP6349575A | ||||
| JP5712073B2 | ||||
| JP60138384A |
Attorney, Agent or Firm:
Keiichiro Saikyo