A system is provided that includes an intake system configured to supply a blended well fluid to a metal extraction system. The intake system includes a manifold including a plurality of fluid inlets, an internal flow path coupled to the plurality of fluid inlets, and a fluid outlet coupled to the internal flow path. The intake system also includes a plurality of sensors used to obtain sensor feedback of one or more parameters of the plurality of well fluids. The plurality of flow controls is coupled to each of the plurality of fluid inlets and the plurality of flow controls to adjust a blend of the one more parameters in the blended well fluid including metal within a concentration range used for metal extraction by the metal extraction system.

Disclosed are a solution preparation device, a solution replacement system and a solution replacement method. The solution preparation device comprises a liquid container, a powder container, an upper cover and a controller; the liquid container is provided with a detection element for detecting a specific parameter of a solution; the powder container is arranged above the liquid container, and the upper cover covers a top end of the powder container to form a material holding cavity for placing a powder, a bottom end of the powder container is provided with a material discharge port through which the powder in the material holding cavity enters the liquid container. The solution preparation device further comprises a stopper for blocking the material discharge port, the controller controls the stopper according to the specific parameter to realize opening and closing of the material discharge port.

A split-type blade, a fluid drive device and a fluid drive proportional mixer. The split-type blade is used as a component of the fluid drive device to convert pressure energy of fluid into mechanical energy. The split-type blade comprises: one or more push rods, each push rod being suitable for being arranged on a rotor of the fluid drive device in a radially slidable manner; and two valve plates, the two valve plates being respectively mounted in parallel at two end portions of the push rods, and each valve plate extending outwards along the push rods to form the split-type blade having a running-through push rod structure. In this way, when the split-type blade drives the rotor to rotate under the effect of a fluid, the push rods of each split-type blade slide in a radial direction relative to the rotor.