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一九七八年球团矿生产没有多大变化。尽管上一年度钢铁市场萧条,仍然有新的球团工厂继续投产。估计到一九八○年球团矿的年产量将超过二亿五千万吨。巴西已成为重要的球团矿生产者。图巴朗的三家球团矿生产8000吨球团矿。萨玛尔科矿业公司在蓬塔乌布港的维多利亚建造了年产能力为500万吨球团矿的造球工厂。用混有铁英岩的赤铁矿精矿粉加入2.5～3%的空气消化石灰造球,成球盘直径为7.6米。已经建造的德拉沃—鲁奇烧结机炉篦面积力700平方米,带有88个真空室,球团矿产品粒度为10—16毫米,含铁65—67%,作为粘结剂的空气消化石灰在三个车间用特殊方法制备,其生产能力为每小时60吨。大块生石灰碾磨至小于12.7毫米,随后送入带有搅拌叶片的混料斜槽开始消化。灰浆则输入带有搅拌装置
The production of pellets did not change much in 1978. Despite the sluggish steel market in the previous year, there are still new pellet factories that continue to operate. It is estimated that by 1980 the annual output of pellets will exceed 250 million tons. Brazil has become an important pellet producer. Tubal’s three pellets produce 8,000 tons of pellets. Samarco Mining Company built a pelletizing plant with an annual capacity of 5 million tonnes of pellets in Victoria Harbor, Punta Uab. Mixed with iron ore hematite concentrate powder added 2.5 to 3% of the air digestion of the ball, into the ball diameter of 7.6 meters. The already constructed Drava-Lurgi sintering machine has an area of 700 square meters with a grate surface area of 88 vacuum chambers, a pellet size of 10-16 mm, a ferrous content of 65-67%, air as a binder Digested lime was prepared in three workshops using a special method with a production capacity of 60 tons per hour. Large pieces of ground lime are ground to less than 12.7 millimeters and are then fed to a chute with mixing blades to begin digestion. Mortar is input with a stirring device