In a former report4) the authors have proposed a new method to prepare strong briquettes for the vertical retort zinc smelting process by mixing zinc sulfide concentrate with pulverized coal and calcium oxide followed by preheating, briquetting, and coking. In the present study, calcium carbonate has been substituted for calcium oxide because the latter quickly reacts with moisture in the ambient atmosphere and causes the briquette to collapse in a day or two. The coked briquette with calcium carbonate is as strong as the one with calcium oxide, does not collapse after being left in the laboratory for weeks, and is faster for zinc sulfide to be reduced. Fixation of sulfur during the reduction of zinc sulfide is excellent and substantially all the sulfur is fixed in the form of CaS. Although the specific resistance at room temperature, 29.2Ω·cm, of the coked briquette in this study in abtut six times as large as that of the former on with calcium oxide, it easily decreased to about 23Ω·cm when when heated to about 100℃, which suggests the possibility of feeding the briquette into not only a vertical retort but also an electrothermic furnace without additional coke.