Product description:
Lead zinc ore is gray and black powder, and is made by selected and crushed sphalerite and galena sulfide ore.The mohs hardness is 3-5.5, the density is 4.5- 5.0 g/cm3.For the different melting point of sulfide, lead zinc ore is used in friction material for adjusting high-temperature, improving friction coefficient and reducing the dosage of adhesive.It is specially suitable for rake pad drum brake or clutch.The recommended regular consumption rate is about 2-8% according to the required function.