Standard No.:	GB 46790-2025
English Name:	Emission standard of air pollutants for refractory industry
Chinese Name:	耐火材料工业大气污染物排放标准
Professional Classification:	GB    National Standard
Source Content Issued by:	SAMR;SAC
Issued on:	2025-12-02
Implemented on:	2026-1-1
Status:	valid
Target Language:	English
File Format:	PDF
Word Count:	9000 words
Translation Price(USD):	270.0
Delivery:	via email in 1~3 business day

GB 46790-2025 Emission standard of air pollutants for refractory industry English, Anglais, Englisch, Inglés, えいご This is a draft translation for reference among interesting stakeholders. The finalized translation (passing through draft translation, self-check, revision and verification) will be delivered upon being ordered. ICS 13.220 CCS H 57 National Standard of the People's Republic of China ‌GB 46790-2025 Emission standard of air pollutants for refractory industry 食品加工制造业水污染物排放标准 Issue date: 2025-10-31 Implementation date: 2026-05-01 Issued by the General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China the Standardization Administration of the People's Republic of China Contents Foreword 1 Scope 2 Normative References 3 Terms and Definitions 4 Water Pollutant Discharge Control Requirements 5 Water Pollutant Monitoring Requirements 6 Specifications for Wastewater Discharge Outlets 7 Implementation and Supervision1 Scope This standard specifies the control requirements, monitoring, and supervision and management requirements for air pollutant emissions from the refractory industry. This standard applies to the management of air pollutant emissions from existing refractory industrial enterprises or production facilities, as well as to the environmental impact assessment of construction projects in the refractory industry, the design of environmental protection facilities, the acceptance of completed environmental protection facilities, the issuance of pollutant discharge permits, and the management of air pollutant emissions after these projects are put into operation. 2 Normative References The following documents, or the clauses cited therein, are referenced in this standard. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including all amendments) applies. If other documents are superseded, modified, or revised by new ones, the new documents apply. GB 37822 Standard for fugitive emission control of volatile organic compounds GB/T 4754-2017 Industrial Classification for National Economic Activities GB/T 15516 Ambient Air — Determination of Formaldehyde — Acetylacetone Spectrophotometric Method GB/T 16157 Determination of Particulates and Sampling Methods of Gaseous Pollutants from Exhaust Gas of Stationary Sources GB/T 16758 Classification and technical requirements of exhaust hoods HJ/T 32 Stationary Source Emission — Determination of Phenolic Compounds — 4-Aminoantipyrine Spectrophotometric Method HJ 38 Stationary Source Emission — Determination of Total Hydrocarbons, Methane and Non-methane Hydrocarbons — Gas Chromatography HJ/T 42 Stationary Source Emission — Determination of Nitrogen Oxides — Ultraviolet Spectrophotometric Method HJ/T 43 Stationary Source Emission — Determination of Nitrogen Oxides — Hydrochloric Naphthylethylenediamine Spectrophotometric Method HJ/T 45 Stationary Source Emission — Determination of Asphalt Smoke — Gravimetric Method HJ/T 55 Technical Guidelines for Fugitive Emission Monitoring of Air Pollutants HJ/T 56 Stationary Source Emission — Determination of Sulfur Dioxide — Iodometric Method HJ 57 Stationary Source Emission — Determination of Sulfur Dioxide — Constant Potential Electrolysis Method HJ/T 67 Stationary Source Emission — Determination of Fluorides — Ion Selective Electrode Method HJ 75 Specifications for Continuous Emissions Monitoring of Flue Gas Emitted from Stationary Sources (SO₂, NOx, Particulates) HJ 1330 Stationary Source Emission — Determination of Ammonia and Hydrogen Chloride — Portable Fourier Transform Infrared Spectroscopy Method HJ 1331 Stationary Source Emission — Determination of Total Hydrocarbons, Methane and Non-methane Hydrocarbons — Portable Catalytic Oxidation-Hydrogen Flame Ionization Detector Method HJ 1332 Stationary Source Emission — Determination of Total Hydrocarbons, Methane and Non-methane Hydrocarbons — Portable Gas Chromatography-Hydrogen Flame Ionization Detector Method HJ 1405 Technical Specification for Monitoring Point Setting at Pollutant Discharge Outlets of Pollutant Discharging Units WS/T 757-2016 Technical Specification for Detection and Evaluation of Control Wind Speed of Local Exhaust Ventilation Facilities 3 Terms and Definitions For the purposes of this standard, the following terms and definitions apply. 3.1 refractory industry The industry involved in producing refractory raw materials and products from natural ores or other materials through single or combined processes such as crushing, calcining, proportioning, mixing, shaping, drying, firing (electrofusion), and processing. It includes Manufacture of Refractory Ceramic Products and Other Refractory Materials (C3089) in GB/T 4754-2017; fire clay, calcined fire clay, and other refractory earth and stone within Mining of Refractory Clay and Stone (B1013); magnesite mining (B0917); and refractory raw materials and products within Manufacture of Other Non-metallic Mineral Products (C3099). 3.2 refractory Inorganic non-metallic materials with physical and chemical properties suitable for use at high temperatures, though certain products may contain a certain amount of metallic materials. Common types include silica, fireclay, high-alumina, chrome, magnesia, dolomite, carbon, zirconia refractories and composite refractories composed of these materials, as well as special refractories made from oxides, nitrides, borides, carbides, silicides, etc. 3.3 refractory product Various products made from refractory raw materials, including shaped products such as various refractory bricks, refractory ware, etc., and unshaped products such as castables, mortars, etc. 3.4 tunnel kiln A continuous kiln for firing refractories, built with refractory materials, insulating materials, and building materials, shaped like a tunnel, and equipped with kiln cars or other conveying devices. It also includes roller hearth kilns where rotating rollers serve as the carrier for the ware, and pusher slab kilns where slabs serve as the carrier. 3.5 shuttle kiln An intermittent kiln for firing refractories where kiln cars replace the kiln bottom. The ware to be fired is stacked on kiln cars, which are pushed into the kiln, the door is closed, and after firing and cooling to a certain temperature, the door is opened and the kiln cars are pulled out for loading and unloading. 3.6 shaft kiln A vertical kiln for calcining refractories where raw material is fed from the top, air is blown in from the bottom by a high-temperature fan, the material moves downward by gravity, and the calcined material (clinker) is discharged from the bottom. 3.7 rotary kiln A kiln for calcining refractories consisting of a steel cylindrical shell lined with refractory material, rotating slowly. 3.8 electric arc furnace An electric furnace for producing refractory materials by melting ores or materials using the high temperatures generated by electric arcs between electrodes. 3.9 volatile organic compounds (VOCs) Organic compounds that participate in atmospheric photochemical reactions, or organic compounds determined according to relevant regulations. When characterizing the overall emissions of VOCs, non-methane total hydrocarbons (expressed as NMHC) are used as the pollutant control item based on industry characteristics and environmental management requirements. 3.10 non-methane total hydrocarbons (NMHC) The sum of all gaseous organic compounds other than methane that produce a response on a hydrogen flame ionization detector when measured by the specified monitoring method. Results are expressed in terms of carbon.