Crystallizer casting powder melting rate testing device and method based on copper bath method

The invention relates to a crystallizer casting powder melting rate testing device based on a copper bath method, which is characterized in that a copper block is arranged in a graphite crucible, the copper block is heated and melted to form a copper bath, a slag containing ring is placed on the graphite crucible, the slag containing ring is arranged on the copper bath, casting powder to be tested is arranged in the slag containing ring, and a slag outlet hole is formed in the graphite crucible; and liquid slag is formed after the casting powder is melted and flows out from the slag outlet hole, and drips onto an accumulated liquid weighing device of an automatic weighing system arranged below the slag outlet hole. The copper bath forms eddy current under the action of induced current, the surface is in a moving state, and the casting powder is melted through longitudinal conduction and convective heat transfer. The molten steel level in the crystallizer is also in a fluctuating state, and the casting powder