火法试金炉：火试金熔样炉+灰吹炉

火法试金炉

火法试金炉是一种用于分析含贵金属矿石样品成分的重要设备，主要用于熔融在耐火粘土坩埚中粉碎的矿石样品以及混合助熔剂，例如粉状氧化铅。这一过程使贵金属（如金、银等）与样品中的其他材料分离，便于后续的分析和提取。火试金熔样炉、灰吹炉、火法试金炉一体炉。

火法试金炉适用于电子、陶瓷、冶金、玻璃、新材料开发等领域的实验和生产，其特点包括独立式炉膛，便于维护及更换炉膛，适用多领域的实验及生产。

火法试金的操作过程主要包括三个阶段：先是熔炼，即使用熔剂熔炼矿石和冶金产品；其次是灰吹，通过控制温度使铅合金中的铅和其他贱金属材料被去除；最后是合粒出现“闪光”现象，表示贵金属已经与贱金属分离。在整个过程中，需要注意的是，在900℃保温待“铅扣”全部熔化并发亮后，控制在860℃左右进行灰吹，约1小时灰吹完成，然后立即将灰皿移至炉门口，放置片刻后取出冷至室温。

此外，火法试金炉的自动化程度高，操作简单，灰吹后形成的金银合金粒外观显示形体均匀，圆润饱满，球面光洁，金属质感强，大大优于普通高温马弗炉灰吹后得到的金银合金粒。这种炉子不仅适用于多种领域，而且具有较大的炉膛容积，能够满足不同规模实验和生产的需求。

The fire assay furnace is an important equipment used for analyzing the composition of ore samples containing precious metals. It is mainly used for melting ore samples crushed in refractory clay crucibles and mixing fluxes, such as powdered lead oxide. This process separates precious metals (such as gold, silver, etc.) from other materials in the sample, facilitating subsequent analysis and extraction
. The fire testing furnace is suitable for experiments and production in fields such as electronics, ceramics, metallurgy, glass, and new material development. Its features include an independent furnace, which is easy to maintain and replace, and is suitable for experiments and production in multiple fields.
The operation process of pyrometallurgical gold testing mainly includes three stages: first, smelting, that is, using flux to melt ore and metallurgical products; Secondly, ash blowing is used to remove lead and other base metal materials from lead alloys by controlling the temperature; Finally, there is a "flash" phenomenon in the composite, indicating that the precious metal has separated from the base metal. During the entire process, it should be noted that after the "lead buckle" is fully melted and lit at 900 ℃, the ash blowing should be controlled at around 860 ℃. After about 1 hour of ash blowing, the ash dish should be immediately moved to the furnace door, left for a moment, and then taken out and cooled to room temperature.
In addition, the fire method gold testing furnace has a high degree of automation and simple operation. The appearance of the gold and silver alloy particles formed after ash blowing is uniform, round and full, with smooth spherical surfaces and strong metal texture, which is much better than the gold and silver alloy particles obtained after ordinary high-temperature muffle furnace ash blowing. This type of furnace is not only suitable for various fields, but also has a large furnace volume, which can meet the needs of experiments and production of different scales.

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