Abstract: A process and system for purifying molten metal utilize a filter holder which has a spring-loaded clasp for releasably engaging a filter component. The filter holder is particularly well-suited to engaging and releasing a fabric filter having a frame surrounding its perimeter. The process involves releasing the filter component from the filter holder by inserting the filter component into a tapered recess of a mold composite. Another mold composite is mated over the filter component and forms a molten metal flow path, across which the filter is disposed. Then, a feed stream of molten metal is introduced to the flow path and through the filter. An advantage of the filter holder is that the spring tension within the filter holder can be adjusted to allow secure travel before insertion into the tapered recess and easy release of the filter component after insertion is complete.