According to some embodiments, a system and method for dispensing a floor coating in a specified ratio of multiple components is disclosed. The system and method may set and maintain a desired ratio of the multiple components by controlling, with a controller, a drive rate of respective pumps configured for propelling the components from a reservoir to a mixer or a dispenser. The controller may be responsive to at least one of a measured actual drive rate, an environmental condition, an actual usage of each component, and an operational parameter of the system, for adjusting a drive rate of the respective pumps to compensate for discrepancies that may affect the ratio of the multiple components.

Fodder mixing wagon with a mixing container and at least one mixing member arranged rotatable therein for fodder components and a sensor system arranged to co-rotate on the mixing member for examining at least one of the fodder components and/or a fodder mixture formed therefrom. A data transmission system with a transmitter a receiver which are associated with one another in a co-rotating and not co-rotating arrangement for wireless data transmission to and/or from the sensor system; and/or an electrical generator for supplying power to the sensor system. The transmitter and receiver are arranged such that the wireless data transmission is within the mixing container; and the generator is arranged on the stator side to co-rotate with the mixing member and on the rotor side is coupled not to co-rotate. Data transmission is provided with a low transmission power. Inductive data and power transmission may be used.

A compost turning apparatus may include a towable mobile base being elongated in a longitudinal direction and having a lateral direction. The mobile base may comprise a frame, a tongue mounted on the frame, one or more transport wheels mountable in a transport setup and an operational setup, one or more support wheels mounted on the frame, and a drive wheel mounted on the frame. The apparatus may also include a rotor mounted on the mobile base to rotate about an axis oriented substantially parallel to the longitudinal direction of the mobile base. The rotor may have a plurality of paddles arranged in circumferential rows, with various paddle positions and paddle orientations

A system for receiving a single-use vessel containing a mixing device has a support structure adapted to receive the single-use vessel and a drive-unit adapted to power, to control, or to power and control a mixing of contents of the single-use vessel when the single-use vessel is arranged in the support structure. The support structure and the drive-unit are provided as separate components that may be arranged both in an operating position, where the drive-unit is connectable to the mixing device of the single-use bag in the support structure, and in a separated position, where the drive-unit is separated from the support structure. The drive-unit comprises a tag reader that, in the operating position, is arranged to read a vessel tag of the single-use vessel arranged in the support structure.

A system for use with a gunite rig to capture airborne gunite type materials, particularly those containing silica, during the preparation of the gunite. In one respect, as the bags of silica-containing material are placed in the mixing section of the gunite rig and ripped open, airborne gunite dust is captured by a hood, separation, and suction system positioned above the mixer. The mitigation system also includes a plenum box and suction system positioned adjacent the mouth of a gunite pot to capture gunite dust generated as the mixed gunite material falls from a hopper into the gunite pot. A separator positioned upstream of a dust collection apparatus separates the larger heavier particles from the lighter ones.

An example fluid management system for generating a fluid for a treatment operation may include a mixer and a first portable container disposed proximate to and elevated above the mixer. The first portable container may hold dry chemical additives. A feeder may be positioned below the first portable container to direct dry chemical additives from the first portable container to the mixer. The system may also include a first pump to provide fluid to the mixer from a fluid source.

The density of slurries produced by mobile blender for injection into oil and gas wells is controlled using a microwave flow meter. Liquid having a known density is provided to the blender. The liquid is flowed through a conduit and discharged into a blending tub on the mobile blender. The amount of liquid introduced into the tub is measured with a liquid flow meter. Solid particulates having a known density are provided to the blender. The particulates are discharged into the tub by allowing them to fall into the tub from a conveyor on the mobile blender. The amount of the particulates falling into the tub are measured with a microwave flow meter. The flow of the liquid and the particulates are controlled in response to the measurements to blend a slurry having a predetermined density. The slurry is provided for injection into the well.

In accordance with presently disclosed embodiments, systems and methods for efficiently managing bulk material are provided. The disclosure is directed to systems and methods for efficiently combining additives into bulk material being transferred about a job site. The systems may include a support structure used to receive one or more portable containers of bulk material, and a mulling device disposed beneath the support structure to provide bulk material treatment capabilities. Specifically, the mulling device may facilitate mixing of coatings or other additives with bulk material that is released from the portable containers, as well as transfer of the mixture to an outlet location.

A technique facilitates mixing of fluids for use in well treatment operations. According to an embodiment, a dry powder material, e.g. a friction reducer, may be thoroughly mixed into fluid or fluids associated with a well treatment operation. The powder material is combined with liquid, e.g. water, via a series of Venturi mixers arranged to thoroughly mix the materials. In some applications, the Venturi mixers are mounted on a modular unit which is readily moved to a desired wellsite. Additional modular units may be added to increase the amount of product being mixed according to the demands of a given well treatment operation, e.g. a hydraulic fracturing operation.

The disclosed apparatus, systems and methods relate to devices, systems and methods for mixing particulate matter such as salt with moisture. In various implementations, the mixer is transportable. In various implementations the mixer comprises a hopper, at least one auger, and a mixing housing. Various implementations, additionally include at least one liquid tank.