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反吹爐是以“冶炼爐”与“燃烧爐”相連而成,中間有輸火道借吹风送火,爐的形状类似圓形饅头。一、爐的构造 (一)冶炼爐:首先用石头或青砖砌好防潮爐基并設十字通风道,以便烘爐排潮,爐墙和爐底均用耐火砖砌成,但爐底需用耐火材料打成20公分厚,以免漏銅。爐的上盖用旧火油桶割成20公分高,里面用耐火材料打成即可。在爐的下部20公分处留一出銅口,中部40公分处留一操作門(包括加料放釉子)为了避免煤气中毒和放出煤烟硫气,需在操作門的上端設一三公尺高,25—30公分粗的烟囱,另外,在爐的上中部設一氧气管,借以加氧去硫。 (二)燃烧爐:最好使耐火砖砌
Blow back furnace is “smelting furnace” and “burning furnace” connected by the middle of the fire by the hair to send fire, furnace shape similar to the circular bread. First, the furnace structure (A) smelting furnace: First of all, with a stone or green brick damp-proof furnace base and set up cross ventilation, so that the oven tide, furnace walls and bottom are made of refractory bricks, but the bottom of the need Refractories labeled as 20 cm thick, so as to avoid leakage of copper. Furnace lid with the old oil barrel cut into 20 cm high, which can be labeled with refractory. In the lower part of the furnace 20 cm left a copper mouth, the central 40 cm left an operation gate (including feeding put glaze) In order to avoid gas poisoning and the release of soot, you need to operate the door at the top of a three meters High, 25-30 cm thick chimney, in addition, the middle of the furnace set up an oxygen tube, in order to add oxygen and sulfur. (B) burning furnace: the best fire-refractory brickwork