Investigation About The Problems Of The Balance Tons And Spare Tons Of Loading Of The Iron Ore Concentrate

The Nanfen ore dressing plant and the Waitoushan mine of Benxi steel and iron (group) limited company can produce about 450,000,000 tons iron ore concentrate every year. The tailing—concentrating workshops of these two mine plants are mainly in charge of the iron ore concentrate's transmission and the output duty of the tailing ore. In which, the maintenance for the iron ore concerntrate's normal transmission to No.1 and No.2 ironworks is the safeguard for the entire company's normal production. These two mine plants are more than 30 kilometers away from the ironworks, in the railway transportation process, the department of the railway transportation stemming from the safe consideration, has certain the limit to the train loading quantity. It requests that each carriage carrying capacity should not surpass 60 tons. Benxi steel and iron (group) limited company has to pay the transportation fare according to the price for 60 tons each carriage. The fare for which less than 60 tons each carriage or empty carriage also be paid by 60 tons computations, which more than 60 tons each carriage will be fined 4 times of the surpass tonnage amount. Because the loading of the iron ore concerntrate has no measure installment, it has to totally depend on the operator's visualization to estimate the loading range. But because of the difference of the moisture content and the proportion, the actual loading is very difficult to achieve the artificial control and causes to load less than 47 tons per carriage or more than 60 tons per carriage (net weight). For many years, it has created the fines for spare tons of the iron ore concerntrate, the additional payment for balance tons, the fines for lateness to unload the ore which returned and the fines for long time operating on the mine plant in winter. All of these have brought the enormous loss to the company.This project belongs to the area of Measurement Technique and the automation Technique, it aims for those problems such as balance tons or spare tons on the train which leading to the loss for the enterprise, the possible unsafe transportation by overloading carriage to the railroad, etc., seeking for a preferred and practical plan to satisfy the needs of operating scene.This topic unifies the axle pad and sells the shaft sensor to be a compound examination system, and by the continual track structure of the scale body, it applys waterproof and antifreezing technique in view of the bad situation of the operateing scene. Even if the ice-bound scene the system also can work normally. Its structure type, antifreezing technique and so on are the domestic origination.This topic take the non-hole excavated compound continual track scale equipment as a core, matched by the berth judgment, the independent weigh sorftware, and the large screen displayer etc., it solved the big economic loss problem, which since the routine track scale cant' be used in the working scene leading to the loading with non-measurement equipment for many years.