The grade of low-grade nickel matte (Cu + Ni + Co) is 47%. Ausmelt submerged top-blown furnaces are used to produce low-grade nickel matte by smelting nickel concentrate in Jinchuan Group Co., Ltd. and Ji Lin Ji En Nickle Industry Co., Ltd., with an annual output of 60,000 tons and 15,000 tons of nickel, respectively.Web