GB29435-2025

Norm of energy consumption per unit production of rare earth metallurgical enterprise

稀土冶炼企业单位产品能源消耗限额

GB 29435-2025 é uma norma nacional chinesa obrigatória que entrará em vigor: Norm of energy consumption per unit production of rare earth metallurgical enterprise. Setor: Construção. Foco: Eficiência energética. Entrada em vigor: 1 de jan. de 2027.

A aplicabilidade depende do escopo do produto, da via de certificação, dos avisos da autoridade competente e das regras de transição. Solicite uma tradução ou verifique a fonte antes de usar este registro em uma decisão de conformidade.

Visão geral de conformidade

Esta visão geral está disponível por enquanto apenas em inglês.

Escopo e aplicabilidade

This standard applies to the calculation, assessment, and control of energy consumption per unit product for rare earth smelting enterprises, including rare earth compounds, metals, and alloys. It also covers rare earth compounds produced through the comprehensive recovery of NdFeB waste. This standard is mandatory for new, reconstructed, and expanded rare earth smelting facilities. It replaces the previous edition, GB 29435-2012, and removes the applicability to rare earth phosphors for lamps and polishing powders.

Requisitos técnicos

GB 29435-2025 categorizes products based on raw materials and manufacturing processes to establish energy consumption limit grades. For rare earth compounds, the classifications include ion-type rare earth ore, mixed-type rare earth ore, bastnaesite, and NdFeB waste recovery. For metals and alloys, it distinguishes between electrolysis/thermal reduction and intermediate alloy methods. The standard introduces a three-tier energy efficiency system, where Grade 1 represents the highest efficiency (lowest energy consumption) and Grade 3 represents the baseline limit. Existing production enterprises must meet the Grade 3 requirements, while new, reconstructed, and expanded facilities must achieve the more stringent Grade 2 limits. The statistical scope encompasses all primary and secondary energy consumed by main production, auxiliary, and affiliated systems, as well as purchased energy-consuming working fluids. It also provides detailed guidelines on how to account for comprehensive energy consumption, including the accounting of waste heat recovery.

Métodos de ensaio

The standard outlines specific statistical scopes and mathematical formulas for calculating the comprehensive energy consumption per unit product. It requires converting various energy sources (such as natural gas, electricity, and petroleum products) and purchased working fluids (like water, oxygen, and compressed air) into standard coal equivalent (tce). The conversion coefficients should be based on actual measured values or standard reference values provided in the appendices, referencing standards such as GB/T 2589.

Perguntas frequentes

What products are regulated under GB 29435-2025?

It applies to rare earth compounds, metals, and alloys produced by rare earth metallurgical enterprises, including products manufactured through the comprehensive recovery of NdFeB waste.

What are the main updates from the previous version, GB 29435-2012?

The 2025 version removes rare earth phosphors for lamps and polishing powders from the scope, adds products from NdFeB waste recovery, updates the energy consumption limit values, and revises the statistical scope and calculation methods.

What are the energy consumption requirements for new rare earth smelting facilities?

New, reconstructed, and expanded production enterprises must meet the Grade 2 energy consumption access values, which are stricter than the Grade 3 baseline required for existing facilities.

The summary above provides a high-level overview of GB 29435-2025. To ensure complete compliance for your products entering the Chinese market, a precise and professional translation of the full technical specifications is essential. Purchase our high-quality English translation of GB 29435-2025 today to access all detailed parameters, tables, and testing procedures.

Indicações de aplicabilidade

Tipo: Gestão
CCS: F01
ICS: 27.010
Órgão competente: Standardization Administration of China
Comitê técnico: National Technical Committee on Energy Fundamentals and Management of Standardization Administration of China

Relações

Substitui:GB 29435-2012 (Vigente)