Patent certificate


A preheating and heat-transfer device for the end of a rotary kiln used in ceramic proppant production.

A preheating and heat-transfer device for the end of a rotary kiln used in ceramic proppant production.

A reactor for preparing proppants

A reactor for preparing proppants

A grinding mill for the production of repair materials

A grinding mill for the production of repair materials

A multi-stage screening device for ceramic proppant sand

A multi-stage screening device for ceramic proppant sand

An aluminum slag crushing device

An aluminum slag crushing device

A homogenizing device for castables

A homogenizing device for castables

A castable dryer

A castable dryer

A cooling system for the post‑calcination stage of an oil‑field fracturing proppant kiln

A cooling system for the post‑calcination stage of an oil‑field fracturing proppant kiln

An automatic batching device for the production of oil‑field fracturing proppants.

An automatic batching device for the production of oil‑field fracturing proppants.

A granulation device for the production of proppants used in oil fracturing.

A granulation device for the production of proppants used in oil fracturing.

A rotary kiln for the production of oil‑field fracturing proppants

A rotary kiln for the production of oil‑field fracturing proppants

A grinding device for the production of proppants used in oilfield hydraulic fracturing.

A grinding device for the production of proppants used in oilfield hydraulic fracturing.

A ton-bag packaging device for oil fracturing proppants

A ton-bag packaging device for oil fracturing proppants

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