The combinatorial effects of slag composition and O₂-blowing conditions on silicon (Si) and iron (Fe) removal as well as gold (Au) and silver (Ag) enrichment from waste printed circuit boards (WPCBs) were investigated to optimize pyrometallurgical WPCBs recycling process. Regardless of the experimental conditions, the removal rate for Si and Fe was approximately 100%, except in slag-free operation. The Si removal rate was generally higher than the Fe removal rate at a given reaction time irrespective of experimental variables because the O₂ affinity of Si is higher than that of Fe in molten copper, thermodynamically. The removal rate of impurities was clearly dependent on blowing conditions and slag composition, and a combinatorial operation of bottom-blowing and highly fluid slag favored the efficient removal of impurities. The maximum enrichment ratio of Au and Ag ($C_{\text{Au},\text{Ag}}^{\text{Max}}$) was about 10% and the possession rates of Au and Ag, $R_{\text{Au},\text{Ag}}$ at $C_{\text{Au},\text{Ag}}^{\text{Max}}$ were greater than 96%. The loss of Au and Ag can be minimized, i.e., $R_{\text{Au},\text{Ag}}$ can be maximized by stopping O₂-blowing before metal droplets are physically entrapped by molten slag, because metal droplet's entrainment is affected by slag viscosity, which contributes to the settling velocity of metal droplets. Consequently, it is very critical to appropriately control not only the slag composition but also O₂-blowing conditions for both impurities removal and maximizing precious metals enrichment and possession.

炉渣组合物和O的组合效果₂上硅-blowing条件（Si）和铁（Fe）的去除以及金（Au）和银（Ag）富集从废物印刷电路板（WPCBs）进行了研究，以优化火法冶金WPCBs回收过程。无论实验条件如何，除无渣操作外，Si 和 Fe 的去除率约为 100%。在给定的反应时间内，无论实验变量如何，Si 去除率通常高于 Fe 去除率，因为 O ₂从热力学上讲，Si 在熔融铜中的亲和力高于 Fe。杂质去除率明显取决于鼓风条件和炉渣成分，底吹和高流动渣的组合操作有利于有效去除杂质。Au和Ag的最大富集比（$C_{\text{金},\text{银}}^{\text{最大限度}}$) 约为 10% 和 Au 和 Ag 的拥有率， ${\mathrm{电阻}}_{\text{金},\text{银}}$ 在 $C_{\text{金},\text{银}}^{\text{最大限度}}$大于 96%。Au和Ag的损失可以最小化，即，${\mathrm{电阻}}_{\text{金},\text{银}}$可以通过在金属液滴被熔渣物理截留之前停止吹入O ₂来最大化，因为金属液滴的夹带受渣粘度的影响，这有助于金属液滴的沉降速度。因此，是非常关键的，适当地控制不仅的矿渣组合物也ø ₂ -blowing两种杂质的除去条件和最大化贵金属富集和拥有。