Test device for determining reducibility of iron ore

Abstract

The invention discloses a test device for determining the reducibility of iron ore, which comprises a furnace body, a reduction pipe, a weighing device and a control device, wherein the inside of the furnace body is provided with a furnace chamber; the reduction pipe is arranged in the furnace chamber of the reduction furnace; the reduction pipe is suspended under the weighing device; the reduction pipe is provided with a reducing air inlet and a reducing air outlet; and the inside of the reduction pipe is provided with a thermocouple. The test device also comprises an exhaust pipe, a gas-collecting channel is arranged at the position of the reducing air outlet, the exhaust pipe is connected with the gas-collecting channel, the inside of the gas-collecting channel is provided with an igniter, the exhaust pipe is provided with a fan, and the igniter is in signal connection with the control device. As an improvement, the test device also comprises a lifting mechanism, a lifting rod of the lifting mechanism comprises a moving rod and a fixed rod, the moving rod is fixed with a lifting frame, and the lifting frame is fixed with the weighing device; and the gas-collecting channel is rotationally or movably connected with the furnace body. In the proposal, after reduction, CO in the air is removed by burning to eliminate safety hazards. Meanwhile, the test device is convenient in use.

Description

Technical field [0001] The invention relates to a test device, more specifically, a test device for measuring the reducibility of iron ore. Background technique [0002] The reducibility of iron ore is a measure of how easy it is to use reducing gas to remove oxygen combined with iron from iron ore; the degree of reduction is based on the state of ferric iron, and the deoxidation achieved after a certain period of time reduction Degree; the reduction rate is the time unit of 1 minute, the change value of the degree of iron ore per unit time during the reduction process. The determination of the reducibility of iron ore often reflects the reducibility of iron ore by indicators such as reduction degree and reduction rate. [0003] In the existing reduction of iron ore, it is generally done by placing a sample of a certain particle size range in a fixed bed, using C0 and N 2 The composition of the reducing gas is subjected to isothermal reduction at a temperature of 900°C, and the m...

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Problems solved by technology

But it still has the following disadvantages: First, the gas after reduction is directly discharged from the outlet of the reduction gas, because the gas discharged after reduction still has CO components, so there is a potential safety hazard

Simultaneously, when the above-mentioned test device for measuring the reducibility of iron ore is performing a measurement test, it is necessary to remove the weighing device, then take out the reduction tube from the furnace cavity, and then add iron ore powder or replace the iron ore powder. Inconvenience in operation

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