TECHNOLOGY FOCUS - INSTRUMENTATION AND TESTING - Preferred Components: The uniquely designed specific refractory brick comprises a straight plate brick, a transverse brick, an inclined plate brick, an inclined brick and a hole brick. The straight plate brick is rectangular thick plate, where the lengthasteriskthickness of the upper side is provided with a semicircular concave groove, the lengthasteriskthickness of the lower side is provided with a semicircular convex groove and the lengthasteriskwidth on the side of the two lateral surface is provided with a semicircular groove. The transverse brick is rectangular thick plate, where the lengthasteriskthickness of the upper side is provided with a semicircular concave groove, the lengthasteriskthickness of the lower side is provided with a semicircular convex groove and the widthasteriskthickness of the two lateral surface is provided with a semicircular concave groove. The inclined plate brick is right angle trapezoid shaped thick plate, where the long bottom edgeasteriskthickness side is provided with a semicircular concave groove, the short bottom edgeasteriskthickness side is provided with a semicircular groove, the right angle waistasteriskwidth side is provided with a semicircular groove and a semicircular convex groove, and the inclined waistasteriskwidth side is provided with a semicircular concave groove. The inclined brick is long brick of right angle trapezoid shaped, where the long bottom edgeasterisklength side close to the inclined waist side is provided with a semicircular groove and the inclined waistasterisklength side with two lateral surface is provided with a semicircular groove. The hole brick is gun shaped long strip, where the gun port is provided with a semicircular groove and the grab handle is provided with a semicircular concave groove. The straight plate brick is placed to form first layer. The transverse brick is horizontal inserted into the straight plate brick between second adjacent rows. The side of self-lock groove on the same row of the two adjacent inclined bricks are provided at the side of the convex edge, the third layer and the hole brick. The transverse brick transversely inserted into the adjacent two rows between the hole brick. The side of self lock groove on the same row of the adjacent hole brick are provided at the convex bridge and starting from the fourth layer the building method is repeated for 3-4 times. Each hole brick is connected to the vertical gas channel within the inner furnace wall tightly to the core. At least three vertical gas channels are set with the horizontal plane and the vertical gas channel is connected with the transverse air channel. The second transverse gas channel is connected with the furnace gas inlet, and the next transverse gas channel is connected with the furnace gas outlet. The multi-point quantitative carbon discharging device comprises a rotating scraper discharge device, a spiral discharging device and a star-type discharger.