Dear sir, We can supply copper slag every month for 8000MT ,the parameters of it are as below: The details of our copper slag are as below: size:8---30mesh(0.6---2.5mm),Grain degree: 30 mesh hardness of degree : more than 6 grade moisture: 0.1% electric conductivity rate: 0.6ms/m Fe2O3: 29---36% CaO: 6---12% Cu2O: 0.2--0.6% Al2O3: 2--4.34% SiO2: 28--33% Color: bright black shape: sharp angle forms PH: 6.8--8.0 Original: China If you have interest in this pls contact with us! Our contacted list is as below: Contact person: Mrs doris lu toptitle: International sales manager Hotmail : luhui.happy SKYPE: aloe.luhui